new PSYCH 540 Week 5 DQ 1 .pdf
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PSYCH 540 Week 5 DQ 1
Measures of Central Tendency & Correlation
1. The subject of this question is measures of central tendency. (Let’s not bother with mode because it will
rarely come up in real life.) This is THE basic part of any quantitative study’s data analysis. Let’s make sure
we’re clear about what the mean and what the median are. Does all data have a mean and a median? Why or
why not? When is the mean the best measure of central tendency? When is the median the best measure of
central tendency? Now for an important part of many studies: what is the standard deviation? (Don’t be shy
about giving this a try; we’ll help with explanations.) Why is sd (standard deviation) such an important term?
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