I spoke at an event about the Retail Prices Index (RPI) last week and made three points – that there is a misunderstanding about the formula effect, ONS is too influenced by economists’ ‘group think’ and weaknesses in governance. These can all be resolved easily, returning RPI to full use, if ONS and UKSA wants to. It was widely agreed that “the mess” had to be sorted out, and as the RPI cannot be killed off some modest changes to it are required. Continue reading The truth about the RPI – some brief comments
This is about a bad trend in some questionable data: the official data says that the UK has a huge balance of trade deficit in goods, it’s getting worse and the driving force behind the trend has been the growing deficit with the EU. True? Probably. This trade deterioration needs to be noted, diagnosed, discussed as part of the Brexit negotiations and reversed. Continue reading The UK’s trade deficit in goods
Can the Retail Prices Index be killed off? Should it be killed off and, if so, for what reason? Or is reform needed? A meeting is coming up (at the RSS in London, on 13 June, book here) to discuss the future of the RPI and the changes needed to all consumer price measures to keep them fit for purpose. Why not come and hear the views of John Pullinger, the UK’s National Statistician, and other experts?
Without wanting to engage in BBC bashing it must be said that this morning’s BBC Radio 4 Today programme had too many examples of sloppy use of data. There were school boy errors: focusing on the latest figure not the trend, comparing annual data to quarterly data, getting the number wrong, ignoring the impact of inflation when comparing figures over time, choosing the wrong denominator and flooding the debate with large but ultimately meaningless numbers. I am not a regular listener to the BBC’s flagship news programs but I hope they are generally better than this! Continue reading BBC and sloppy numbers
The gender pay gap is a sensitive, highly topical subject and the deadline is approaching for companies to report their data, often for the first time. It’s a shame then that the BBC article from their “data journalists” setting out to explain what’s happening, “Gender pay gap deadline: What to know“, misses some simple points and does little to help anyone who might be confused. The data is not complicated but there are various aggregate statistics in the public domain which are based on different definitions, and thus need to be used carefully and described clearly. Continue reading The BBC’s unhelpful article on the gender pay gap
The ONS published this week a new – I’d say conceptually more sound – experimental house price index. It is based on the stock of homes not the flow so tells us what’s happening to the whole market not the price of what’s just been sold. The estimate of the average price is lower than under the old methodology – £194,000 compared to £215,000 in the old measure, about 10% lower. The stroke of the methodologist’s pen has made homes more affordable even though no prices have changed! Perhaps this is the time to reflect on the full range of house price estimates at our disposal – and, dare I say it, how meaningless the average numbers are? Depending on what you count and how you add the numbers up, the resulting averages can be wildly different, as much as £100,000 apart. Continue reading The price of a house – a stupid average
The RPI has recently been subjected to a sustained bout of unfair criticism from politicians and commentators. Despite this, the judge in the recent BT pensions case deemed that the RPI had not “become inappropriate” and that BT had no grounds for moving a group of their pensioners to the CPI which gives generally lower upratings. The RPI is, therefore, still fit for purpose. This was a relief to me – I was the expert witness arguing in favour of the RPI – if not a surprise. The full story as to how we got to the situation where so many people (mostly, it must be said, economists and the powerful and self-interested trying to cut their costs) are doing the RPI down is yet to be told. The decision was important for the pensioners as their incomes would not be unjustifiably cut. It was also a good day for common sense, and for the RPI, one of the country’s longest-standing, most trusted and widely-used statistics. The Thales and BT rulings taken together provide food for thought for those who continue to damage the reputation of the RPI without looking beyond the mantras and sloppy headlines. Continue reading RPI: Still fit for purpose
The earnings figures are very important and politically sensitive, yet the trends are highly uncertain and poorly presented by ONS. The poor presentation by the ONS centres on the failure to remove compositional changes and present earnings growth on a like-for-like basis. This has not only led to an overly pessimistic view of what’s happening in the real world but means that political and media attention has been diverted from the real issues in the labour market.
The ONS published a welcome note yesterday updating the progress being made with statistics on the migration patterns of international students coming to the UK. It gave a fairly upbeat impression but really only laid bare how little we as a nation know about these students. New statistics are needed – and requiring all students to get a National Insurance Number would be a good start and might even be part of the post-Brexit changes. Lets hope that the ONS and UKSA Board are in there arguing for such changes. The article also had a graphic that was misleading and below the standards that we might expect from the ONS. Continue reading International student migration – ONS update
The ONS and its governing board, UKSA, does not lie but on migration their statements stretch credibility and do nothing to boost public trust in data. The ONS needs to change its stock press briefing that the passenger survey is “the best available source” for migration data. It is true but only because it does not seek a better source. It’s like telling a cancer patient that an x-ray is best when we know the (more expensive) scan is better – it might help at the margin in some cases but it’s not what’s needed. It is damaging to give such a deeply misleading impression of the data’s veracity. For the same reason, the ONS needs to stop publishing confidence intervals on migration data.
The UKSA needs to say it as it is – migration numbers are not fit for purpose and a new system (and more money) is needed to collect decent numbers. Brexit will require better data so UKSA would no longer be saying anything radical. Pretending that the figures are OK is not only a failure of its regulatory duty but provides cover for a Home Office that really needs to get on with what’s required – the not so tricky job of counting people crossing borders. Continue reading ONS: Time to be frank on migration