Correction post – true average costs, whether average costs are true, and that chart

In a post last week, I suggested that a chart on average teaching costs compared to funding rates in the Tehan reform discussion paper, which was causing concern and confusion, and was later amended by the Department of Education, might make things look worse than was the case.

This turned on what kind of ‘average’ we were looking at. There are multiple versions of average 2018 estimated costs by field of education floating around – an average of averages (all institution average costs by field added up/number of institutions), a median of averages (institutional average cost in the middle of the range for each field), and a true average (total costs for field/EFTSL in field). I thought the chart might use an average of averages, which would over-weight low-EFTSL, high-average cost institutions.

But, having realised that I had the true average numbers when I thought I did not (in a file with a name that did not reveal this aspect of its contents), I now think the Department’s chart is based on true average figures.

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