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Use these fictional scores: 33, 55, 54, 65, 44, 65, 44, 66. Assume that the population from which this sample was drawn has the same
- Use these fictional scores: 33, 55, 54, 65, 44, 65, 44, 66.
- Assume that the population from which this sample was drawn has the same standard deviation as these raw scores. Calculate the standard error.
- Explain why the standard error and standard deviation are different.
- Why do these two measures differ from one another?
- Compare/contrast the distributions that each measure of variability is describing.
- Use these fictional scores: 67, 33, 40, 54, 65, 44, 75, 50. Calculate the mean and standard deviation (you can do this by hand or use an online analysis tool or Excel). Calculate the z score for a raw score of 65. What is the approximate percentile for a raw score of 65? Assume that the population from which this sample was drawn has the same standard deviation as these raw scores.
- Mean
- SD
- z-score
- Percentile
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