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Using Statistical Regression Methods in Education Research

SRME

Extension A Exercise Answer

Following the process outlined in this section you should find your ks3stand distribution looks like the one below:

Standardized age 14 exam scores histogram

As you can see it is now much more in line with a normal distribution (perhaps more so when compared to the age 11 scores). The only discrepancy remains with the floor effect at approximately ‘-25’.

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