Saturday 29 November 2014

Critique of Government Economic Statistics

1. The Consumer Price Index (CPI)
The CPI is probably the most consequential government statistic. It is considered a good indicator of the rate of monetary inflation, it is used in real GDP calculations, cost of living adjustments are tied to it, and it is the most important statistical target for the determination of central bank monetary policy. The Statistics Canada website explains what it is:

“The Consumer Price Index (CPI) is an indicator of changes in consumer prices experienced by Canadians. It is obtained by comparing, over time, the cost of a fixed basket of goods and services purchased by consumers. Since the basket contains goods and services of unchanging or equivalent quantity and quality, the index reflects only pure price change.”[1]

The first problem with the CPI as an inflation measure is a conceptual one. The CPI is a measure of money’s purchasing power over time. The economic factors determining the purchasing power of money are numerous and varied. They include: the supply of money, the demand to hold/hoard money, the supply of the particular goods in the fixed basket, the real demand for those particular goods, and the way that new money flowing through the economy affects the relative monetary demand for those particular goods.

As a result, the CPI, or inflation rate, should not be considered a fundamental economic variable at all. Rather, changes in the CPI are symptomatic of changes happening in some of the more fundamental economic variables mentioned above. Which of these is changing, the CPI does not reveal.

When used exclusively as a measure of the purchasing power of money for consumers, the CPI is conceptually okay. However, when it is used as a target for monetary policy-making, or as a deflator to determine real GDP (discussed in the GDP section), this conceptual problem can wreak havoc.   

Let us now consider the CPI purely as a purchasing power measure. There are some problems with it here too. These are mainly related to the procedure for selecting the fixed basket of consumer goods and their weights. Statistics Canada explains its process for this:

“Each good or service is considered to be an element in a basket representative of consumer spending, and price movements are assigned a basket share with the proportion of total consumption expenditure they account for. For example, Canadians as a whole spend a much larger share of their total expenditures on rent than on milk. As a result, a 10% price increase in rental rates will have a greater impact on the All-items CPI than a 10% increase in the price of milk. The CPI basket shares are updated at two year intervals; the data to specify them are obtained primarily from the Survey of Household Spending.[2]

The first problem is obvious: the CPI is only an accurate measure of changes in your purchasing power of money if you are a perfectly ‘average’ Canadian consumer. The further away from ‘average’ your tastes and consumer spending patterns are, the less relevant the CPI is as a measure of changes in your purchasing power of money.

A second, related, problem has to do with location. The CPI figure reported and relied upon is a Canada-wide one. But consumer price movements can vary widely in different geographical locations: especially in a country as large and as diverse as Canada. Again, the further away from ‘average’ your region’s consumer price movements are, the less relevant the CPI is as a purchasing power measure for you.

A third problem has to do with basket reweighting. The CPI basket shares are updated every two years based on a household spending survey. While incorporating up-to-date information on consumer spending patterns is useful, these frequent reweightings introduce a substitution bias into the CPI calculations. If in one year, for example, the price of carrots goes up by 5% but the price of spinach only goes up by 1%, then there will be a tendency for some consumers to lean their spending patterns away from carrots and towards spinach. If it is a basket reweighting year, than the product whose price is going up slower will take on a bigger weight in the new CPI index, while the product whose price is going up faster will take on a smaller weight. This will tend to understate the CPI rate of increase from the point of view of people who preferred the old basket of goods to the new basket of goods. As a measure of the changes in money’s purchasing power in terms of a fixed basket of goods, the reported CPI is likely to be an understated figure.

Several other issues with the CPI include: how to incorporate new goods and services (ex. Internet service) into a measure that’s supposed to be in relation to a ‘fixed’ basket of goods, how to deal with changes in product quality, how to measure intangibles such as consumption atmosphere and customer service quality, etc…

All these problems do not mean that the CPI is a useless measure that should no longer be reported. Rather, they merely indicate that the CPI numbers should not be treated with the reverence that they are treated with today, nor relied upon to the same momentous extent.

2. Gross Domestic Product (GDP):
GDP growth is the most widely-used and influential ‘economic growth’ statistic. Increases in the real GDP of a country or region are widely considered to indicate increases in the economic well-being of residents of that country or region. Statistics Canada uses both the ‘income’ and the ‘expenditure’ approach for calculating GDP, approaches that are supposed to yield the same result, but we will focus on the expenditure approach because that is the one they use to calculate real GDP. They explain:

“The second approach sums all sales which firms have made to final users - to households, to non-profit institutions serving households' , to governments, to business on capital account, or in export markets. This approach also provides an unduplicated value of total production. Imports, have to be deducted from this summation since they are implicitly included in these final sales and should not be counted as a part of Canadian production - they represent part of the production of non-residents. Sales from one firm to another (intermediate production) are not counted since to do so would involve double counting, all intermediate production being embodied in final output sold to users.”[3]

The result of this calculation will be nominal GDP. Nominal GDP by itself is quite a useless statistic: it basically just measures the amount of money or currency units flowing around the economy in a given period. The nominal GDP of a country experiencing hyperinflation would rise tremendously; but this would not indicate tremendous economic growth, just the opposite in fact.

To make GDP at all meaningful, it must be converted to real terms. The CPI rate of change discussed above is used to do this; it is used to ‘deflate’ the nominal GDP measure by the relevant inflation rate in order to provide a somewhat meaningful real, comparable figure year over year. This procedure presents a host of problems, which we will discuss below.

The most significant problem with GDP as an economic growth statistic is that it just measures ‘production’. It does not really measure what is produced, or who benefits from that production. But these things are vitally important for determining the economic well-being of people living in the country or region in question.

One strange manifestation of this is that destruction does not affect GDP at all. A hurricane could cause billions of dollars worth of damage to the city; this would not affect GDP. Only the repairs to the city would affect GDP, and in a positive direction. Thus, a country who just repaired one million units worth of economic damage every year would have the same GDP as a country who added one million new units of economic value every year.

Another is that government expenditures are included in the GDP calculation. The problem with this is that, unlike for voluntary private sector transactions where at least the private buyer deems the price of a good to be worth paying, there is no such assurance for government expenditures. They could be spent on useless, counterproductive, or simply relatively inefficient ‘services’, but they would count as the same GDP all the same.

Arguably, these and other oddities of the nominal GDP calculation could be resolved by using the CPI as a deflator to reach the real GDP figure. Destruction would probably result in less supply of consumer goods and hence higher prices for them, which would mean a lower real GDP. If government spending messed up the economy, a similar thing could occur. Thus, let us examine this CPI deflator panacea and see if it really does the trick.

Let us examine a possible scenario. If the government spends a whole lot of taxpayer money on ‘free’ goods and services (education, healthcare, roads, military equipment, etc…), things that aren’t included in any inflation index, then this money is no longer available to bid up the price of the ‘private’ goods and services that are included in the CPI. GDP stays high, while the CPI is kept low, simply by the government taking and spending more taxpayer money. The result is an increase in real GDP.

It might be argued that this trick could only work in the short-term; that eventually producers, as a result, will shift their production away from private consumer goods and towards government goods, which will result in a reduction of the supply of private consumer goods and thus an increase in their price and of the CPI. This kind of adjustment can take several years though; more if producers are uncertain whether this state of affairs will last or not. And, if the effect on GDP wears off, the government can just tax and spend even more and revive the effect for the next several years!   

Government-sponsored inflation also has the potential to increase real GDP. All they need to do is print money, spend it, but prevent the CPI from going up enough to offset the spending. Since the new money from modern inflation generally benefits the government and its rich, connected financial-market cronies first before flowing through the rest of the economy, there will be a lag between the inflation-fuelled, GDP-increasing spending and CPI increases. This is because the main inflationary beneficiaries (especially the government and the mega-rich financial players) generally have very different tastes than the ‘average’ consumer does. As a result, the GDP-increasing spending will not result in an immediate corresponding, offsetting rise in the CPI; there will be a lag. In this lag period, real GDP will increase.    

Another problem has to do with the societal consumption/investment ratio. If in a year, this ratio shifts towards savings and investment and away from consumption, then more money will be spent in the ‘intermediate production’ pipeline in a given period (that is not counted in GDP), and less on final consumption goods. GDP will go down as a result. Theoretically, the reduced demand for final consumer’s goods could cause a corresponding drop in the CPI rate of increase, which would offset this effect when the real GDP calculation is done. But it is highly unlikely that this exact relationship would hold; more likely real GDP will be either understated or overstated depending on what exactly happens to consumer prices as a result, which is impossible to predict.

Similar uncertainty applies to trade policy. If the government cracks down on imports but exports remain unchanged, then GDP will go up. Of course, this crack down on imports is bound to lead to an increase in consumer prices, but whether this increase results in a CPI increase large enough to offset the increased GDP is highly uncertain, dependent as it is on complex market phenomena and on the composition of that year’s CPI basket, particularly whether imported goods are a prominent part of it or not.

Basically, if the government can cause an increase in GDP (by taxing and spending, by inflating and spending, by discouraging savings/investment, by discouraging imports), without causing a corresponding rise in the CPI (whose definition is controlled by government statisticians), than they can magically increase the real GDP figure without actually making their citizens better off at all.

This somewhat bizarre, easily manipulable statistic is actually a terrible proxy for the economic growth of a region, yet it is the most widely used and influential one. Though still highly imperfect, after-tax median regional income, deflated by the CPI rate of increase to get a real figure, would be a much better indicator of regional economic well-being. This statistic would, of course, be far less favourable to interventionist governments than GDP, which might explain why it is not as popular.


3. Low Income Statistics
Statistics Canada publishes “three complementary low income lines”[4]. To their credit, the website does explicitly state that:  “These measures are not measures of poverty, but strictly measures of low income.”[5] Nevertheless, this does not seem to deter ‘anti-poverty organizations’ such as Canada Without Poverty from conflating the two: “Statistics Canada released annual numbers on low-income last week illustrating that poverty remains a persistent problem across the country.”[6]

When these three ‘low income’ statistics are passed-off as ‘poverty’ statistics, as is repeatedly done by many Canadian political commentators and activists, these statistics become vicious and misleading. It is from this perspective that we will criticize them.

A. Low Income Cut-Offs (LICOs)
“The low income cut-offs (LICOs) are income thresholds below which a family will likely devote a larger share of its income on the necessities of food, shelter and clothing than the average family.  The approach is essentially to estimate an income threshold at which families are expected to spend 20 percentage points more than the average family on food, shelter and clothing.”[7]

This bizarre but surprisingly influential statistic is a relative measure. The better-off the ‘average family’ gets, the less percentage of their income they will have to spend on necessities. This will push the ‘allowable’ percentage of income spent on necessities for LICO purposes up, resulting in a rising of the income threshold.

Used as a ‘poverty’ statistic, this does not make any sense. If the real incomes of lower income people remain unchanged, but the real income of the ‘average family’ goes up, then according to the LICO as poverty measure, more people will fall into poverty. But why should people who are concerned about poverty be distressed if the real income of the average family goes up? Supposedly, their goal is to raise poor people up, not to drag everybody else down.

B. Low Income Measure (LIM)
In simple terms, the LIM is a fixed percentage (50%) of median adjusted household income, where “adjusted” indicates that household needs are taken into account. Adjustment for household sizes reflects the fact that a household’s needs increase as the number of members increases.”[8]

This blatantly relative ‘poverty statistic’ is apparently the most commonly used low income measure for the purposes of making international comparisons[9]. This fact was demagogically seized upon by Ed Broadbent, former NDP leader turned ‘anti-poverty’ activist, in an editorial in the Globe and Mail, supposedly about ‘child poverty’. He writes:

“By this global measure, we have utterly failed to create equality of opportunity. This child poverty rate is a national disgrace. It jumped from 15.8 per cent in 1989 to 19.2 per cent in 2012, according to a Statistics Canada custom tabulation for Campaign 2000.”[10]

Notice the verbal trickery that is going on here: he says that Canada has failed to create ‘equality of opportunity’, which is true, but then he immediately goes on to say that because of this, the child poverty rate is a ‘disgrace’. But relative income measures have nothing to do with whether children are living in poverty or not. Again, as with the LICOs, if middle income people become better off, thus raising the median household income, but lower income people remain at the same standard of living, how can we possibly say that ‘child poverty’ has increased? No single child, or anyone else, has become more materially destitute as a result of this change. To despair about such a turn of events would simply represent egalitarian mean-spiritedness, not any concern for the well-being of poor people.

C. Market Basket Measure (MBM)
The MBM is a measure of low income based on the cost of a specific basket of goods and services representing a modest, basic standard of living.  It includes the costs of food, clothing, footwear, transportation, shelter and other expenses for a reference family of two adults aged 25-49 and two children (aged 9 and 13).(…)

The MBM thresholds are calculated as the cost of purchasing the following items:
·         A nutritious diet as specified in the 2008 National Nutritious Food Basket (Health Canada 2009).
·         A basket of clothing and footwear required by a family of two adults and two children.
·         Shelter cost as the median cost of two- or three-bedroom rental units including electricity, heat, water and appliances. Shelter cost of mortgage-free owners is no longer reflected in the thresholds, but rather in the disposable income of individual reference families for whom it applies.
·         Transportation costs, using public transit where available or costs associated with owning and operating a modest vehicle where public transit is not available.
·         Other necessary goods and services.[11]

Superficially, this measure seems like it could be a genuine measure of absolute poverty, but if we look more closely, it turns out to be a relative measure of ‘low income’ like the other two.

For food, this ‘National Nutritious Food Basket’ is formulated by making a composite measure of the most popular foods in all the different food groups required in a really healthy diet, and then determining sufficient quantities of these quantities to get all the vital nutrients. The diet represented by this basket is probably richer and more nutritious than the diet of the vast majority of Canadians, including well-off ones. Also, for food choice, it’s not at all based on the cheapest way of getting all these nutrients, but on the most popular, or average, ways of getting these nutrients for Canadians.[12] To pass off this kind of diet as part of a ‘modest, basic standard of living’ is a little questionable.

For clothing and footwear, we are not told how the calculations are done. Based on the other items in the basket, it is probably based on some kind of average. I would be surprised if it was based on prices at second-hand clothing shops and thrift stores, which is where low income people would actually shop if necessary.

For shelter, we are told that it is based on the median cost of an appropriately-sized rental unit. But why on earth would low income people be paying the median cost for shelter? Real low income people would probably opt for accommodations that were cheaper than the median, as would make sense.

For transportation, the measure seems okay, except that we are not told what a ‘modest’ vehicle is. I would be surprised if they used the prices and insurance rates for used vehicles though, which is what low income people would probably opt for if necessary.

For ‘other necessary goods or services’, what is included is left to our imaginations. I suspect that more averages and things that low income people wouldn’t actually buy are included.

Thus, because of what is included, the MBM is not actually an absolute measure of what income people need to sustain themselves and their families, but a kind of relative measure of what income people need to live a low-average lifestyle, with this income threshold going up as the average lifestyle in a country becomes better. This explains why the number of people falling below the MBM lines is similar to the number of people falling below the LICO and LIM lines, both relative measures of low income, as opposed to the number of people falling below lines set by absolute measures of poverty.

D. Conclusions  
So why are these relative, low income measures so prominent in the ‘poverty’ discourse in Canada? Well, using these measures as ‘poverty’ statistics is political gold for leftist egalitarians. The more income inequality there is, the more, according to these misleading statistics, ‘poverty’ there seems to be. By this sleight of hand, the leftists can publicly say that they are interested in fighting poverty, which is a generally sympathetic leftist position, while actually pushing for more equality of incomes, which is a much less sympathetic leftist position. By using these relative statistics as ‘poverty’ measures, fighting poverty and pushing for egalitarianism seem to fuse into the same thing, which is simply not true.


4. Unemployment Rate
People are considered to be ‘unemployed’ for statistical purposes if they are: 1. Without work. 2. Currently available for work. 3. Seeking work. According to the resolution of the 13th International Conference of Labour Statisticians in 1982, ‘seeking work’ means:

“Had taken specific steps in a specified recent period to seek paid employment or self-employment. The specific steps may include registration at a public or private employment exchange; application to employers; checking at worksites, farms, factory gates, market or other assembly places; placing or answering newspaper advertisements; seeking assistance of friends or relatives; looking for land, building, machinery or equipment to establish own enterprise; arranging for financial resources; applying for permits and licences, etc.”[13]

The ‘seeking work’ criterion does make sense from a certain perspective: if you don’t have work but don’t really want to have work, then you being unemployed is not a personal or political problem at all. Actively seeking work is the best indicator that you do actually want to work; you just currently can’t find a job.

However, from another perspective the criterion doesn’t make sense at all. If you are someone who wanted a job, looked around for a good while, but then determined that nothing was out there and gave up, then you would not be considered to be unemployed statistically as you would not be actively ‘seeking work’. However, this state of affairs is probably even worse, from a personal and political perspective, than one where the job seeker hasn’t yet given up the search.

Another difficulty is that anyone could be ‘out of work’ but ‘seeking work’; they just have to set their job and wage expectations high enough. A high-school drop-out could insist on entering the workforce in a managerial role and at a six figure salary; at that rate they would never find a job and would be ‘unemployed’ forever. Less dramatic instances of this phenomenon probably result in many people being listed as ‘unemployed’ when really they are only unemployed because of their own unrealistic expectations; hardly a political problem.

I don’t know of a way to create an unemployment statistic that avoids these difficulties. However, their existence would seem to suggest that policy makers shouldn’t treat these figures with the kind of reverence and reliance that they currently treat them with.


5. Human Development Index (HDI)
The United Nations’ HDI is their attempt to create a statistic that will measure different countries’ ‘achievements’ on a more holistic basis than GDP levels alone. It is a composite index made up of three dimensions: health, education, and standard of living. A UN website explains:

The health dimension is assessed by life expectancy at birth”.

“The education component of the HDI is measured by mean of years of schooling for adults aged 25 years and expected years of schooling for children of school entering age”.

“The standard of living dimension is measured by gross national income per capita.”[14]

Health: Life expectancy is not a very good measure of the health of the population. People could be plagued by annoying, chronic ailments that don’t threaten their life and still have a high life expectancy. If the country has a socialized healthcare system, the government could keep its HDI score up by focusing its health resources on life-threatening ailments and neglecting people with non-life-threatening ailments that reduced their standard of living.  Probably not coincidentally, this is how most existing socialized healthcare systems work anyway.

Education: More years of schooling = better education? Really? Force kids to attend 12 years of public school, in which most learn very little. Then, encourage young adults to complete multiple university degrees in relatively useless subjects by heavily subsidizing their education and by wrecking the job market for young people. Voila, the government has increased the ‘human development’ levels of its population! This nonsensical calculation is obviously heavily biased in favour of state intervention in the education system, no matter how useless or counterproductive.

Standard of Living: GNI per capita is just GDP plus income earned by the country’s residents from foreign sources, divided by the total number of people living in the country. All of the problems with GDP as a ‘standard of living’ or ‘economic growth’ statistic discussed above apply here.

Thus, the HDI is a pretty lousy statistic; heavily biased in favour of state interventionism. It should not be taken very seriously as an indicator of the well-being of the residents of a country. This should be kept in mind the next time you hear someone clamoring for the emulation in our country of the socio-economic policies of #1 HDI-ranked Norway. 
  



[1] http://www23.statcan.gc.ca/imdb/p2SV.pl?Function=getSurvey&SDDS=2301
[2] http://www23.statcan.gc.ca/imdb/p2SV.pl?Function=getSurvey&SDDS=2301
[3] http://www23.statcan.gc.ca/imdb/p2SV.pl?Function=getSurvey&SDDS=1901
[4] http://www.statcan.gc.ca/pub/75f0002m/75f0002m2013002-eng.htm
[5] http://www.statcan.gc.ca/pub/75f0002m/75f0002m2013002-eng.htm
[6] http://www.cwp-csp.ca/2013/07/updated-poverty-numbers-released/
[7] http://www.statcan.gc.ca/pub/75f0002m/2013002/lico-sfr-eng.htm
[8] http://www.statcan.gc.ca/pub/75f0002m/2013002/lim-mfr-eng.htm
[9] http://www.statcan.gc.ca/pub/75f0002m/2013002/lim-mfr-eng.htm
[10] http://www.theglobeandmail.com/globe-debate/canada-has-failed-to-create-equality-of-opportunity/article21704778/
[11] http://www.statcan.gc.ca/pub/75f0002m/2013002/mbm-mpc-eng.htm
[12] http://www.hc-sc.gc.ca/fn-an/surveill/basket-panier/method-eng.php
[13] http://www.ilo.org/public/english/bureau/stat/download/res/ecacpop.pdf
[14] http://hdr.undp.org/en/content/human-development-index-hdi

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