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Q
uantitative
R
easoning &
P
roblem
S
olving
312
© 2014 Pacific Crest
2. What is the relationship between the standard deviation and variance in a data set?
3. What is the difference between calculating the variance of a population and calculating the variance
of a sample?
4. What is the easiest way to increase or decrease the standard deviation of a set of data?
5. If every element of the data set in the model were increased by five years, how would the standard
deviation change?