NBS, U.S Economics Professor Trade War Over Nigeria’s Inflation


The National Bureau of Statistics and the United States Professor of Economics, Steven H. Hanke, have disagreed on Nigeria’s official inflation rate.

The NBS  recently released its figures for the country’s October inflation which puts Nigeria’s rate at 14.23 per cent.

Hanke, a Professor of Applied Economics and Founder and Co-Director of the Institute for Applied Economics, Global Health, and the Study of Business Enterprise at the Johns Hopkins University in Baltimore, alleged the NBS understated the true position of the figures.

The US professor  on Saturday claimed Nigeria’s inflation is 33.91 per cent, a rate more than twice what NBS released for the period.

Hanke  twitted, “Sleepy @MBuhari snivels about #Corruption in #Nigeria. Unfortunately, that’s all he does. #Buhari’s tears won’t wash away the stains of corruption. With such glaring incompetence, it’s no wonder I measure #Inflation at 34.91%/yr. That’s over 2 times Nigeria’s bogus official rate.”

The Bureau in return maintained its stance on the data it released for October, saying, “There are many problems with Prof. Hanke’s claims.”

NBS said, “Firstly, it must be noted that inflation numbers are tirelessly collated, rigorously analyzed, and transparently published by the Nigerian National Bureau of Statistics, which has Field Offices in the entire 744 local governments of the country.

“Secondly, what are the so-called ‘high-frequency data’ he uses to reach his unfounded conclusions? Whatever these datasets might be, it is critical to remind the Professor that inflation is not about price changes for a “selected number” of goods/services, but price changes to “all/general” goods/services. If the price of wristwatches doubles over a given period that does not mean the price of maize or beans has also doubled.

“Prof Hanke’s use of Purchasing Power Parity is surprising, as he should know that it comes with a ton of well-known issues. For example, PPP numbers assume that all purchases are done in US Dollars.

“PPP exchange conversions are problematic, because of the difficulty of finding an exact comparable basket of goods between two countries, especially those that are starkly different like Nigeria and the US.

“Also, Americans may eat more beef while Nigerians may eat more rice. It then begs the question, “How did the Prof control for these differences in his PPP calculations?

“Many aspects of PPP comparison are theoretically implausible, especially when countries differ fundamentally like US and Nigeria. For example, there is no basis for comparison between the Nigerian Commercial motorcyclist who lives on those earnings and the American Cheese farmer, because Nigerian commercial bike riders are not in America and there are no Nigerian Cheese farmers. So, in general, PPP makes sense when the two countries have much more similar price structure.

“While it is certainly true that inflation is rising in Nigeria, Prof Hanke’s figures wildly exaggerated price movements. This is exemplified by the fact that his calculations also suggest that Nigeria experienced deflation between May 2017 and May 2018, which does not line up at all with the reality experienced by any Nigerian during that period of time.

“Also, Professor Hanke did not note that values under 25 per cent must be considered unreliable. However, if this is the case, it is unclear how the same methodology can therefore be reliable for values above 25 per cent. Any measure of inflation must provide credible estimates, otherwise, it cannot be helpful to any policy maker.

“Whilst Prof Hanke’s methodology is not transparently stated, it appears that it is primarily based on exchange rate data. However, this is not a complete picture of the economy as imports only represent about 18 per cent of GDP. Therefore, his numbers would not accurately measure price movements in non-tradable goods like Garri, and non-tradable services like a haircut. Yet, inflation must capture price movement for all goods and services rather than a few.

“Knowing Prof. Hanke’s inglorious and controversial history with promoting Currency Boards (a history that was publicized by very many Economists including Nobel Laureate, Paul Krugman; one can see that his bias would be to imply a far more depreciated Naira and problems with Nigeria’s exchange rate system. Of course, both assumptions introduce an upward inflationary bias to Nigeria’s numbers, without the reality on ground to support this outcome.

“Finally, aside from the substance of the tweet though, it also reflects something much deeper: self-aggrandizing and largely-unfounded intellectual superiority. It is interesting that a Professor sitting thousands of miles away from Nigeria, claims to know more than the entire bureaucracy of the Nigerian National Bureau of Statistics, which has buzzing offices and grand staff in each of the country’s 774 Local Government Areas.”

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