4 ms·
While the scores do appear to reflect a real decline (ie not just noise), we are talking about a 4 & 7 point decline for reading and math respectively on a 500
by comte7092 3y ago
While the scores do appear to reflect a real decline (ie not just noise), we are talking about a 4 & 7 point decline for reading and math respectively on a 500 point scale.
The reading scores in particular seem to reflect a fairly normal variance.
Take that into account before posting your hobby horse narrative as to why society is falling apart.
- SkyBelow 3y agoIf the data is taken from a wide range of plentiful sources, then even a small variance can be very significant. What is the 95%, 99%, or 99.9% confidence intervals for this data?
- comte7092 3y agoWhat do you mean by “very significant” “Significant” from a statistical perspective typically means “not 0 effect size”. It does not follow that the magnitude of the real life impact is particularly notable.