PSYCH 540 Week 5 DQ 1

1
PSYCH 540 Week 5 DQ 1 Measures of Central
Tendency Correlation 1. The subject of this
question is measures of central tendency. (Lets
not bother with mode because it will rarely come
up in real life.) This is THE basic part of
any quantitative studys data analysis. Lets
make sure were 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? (Dont be shy about
giving this a try well help with explanations.)
Why is sd (standard deviation) such an important
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