PSY210 Psychological Statistics
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Simply reporting measures of central tendency or measures of variability will not tell the whole story. Using the following information, what else does a psychologist need to know or think about when interpreting this information?
A school psychologist decided to separate some classes by gender to see if learning improved. She looked at student scores on the final exam and obtained the following information: Students in boygirl classrooms obtained an average of 71.4 on their final exams with a standard deviation of 10.8 whereas students in singlegendered classrooms obtained an average of 75.9 on their final exams with a standard deviation of 8.2. She concludes that the singlegendered classrooms lead to better learning.

PSY210 Psychological Statistics 
PsyDAG
Again, you need to know if the distribution approximates normal and the number of subjects in each sample.
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