If You Realized That a Set of Sample Data Had

Multiple Choice

If you realized that a set of sample data had a lower standard deviation on variable X than is typical for the population,this would create the problem of _____ the apparent strength of association between X and Y for correlation/regression analyses.

A) having an unpredictable effect on
B) increasing/accentuating
C) reducing/attenuating
D) reducing about 95% of the time,and increasing about 5% of the time