The restricted range problem refers to the fact that _____.
a. sometimes an experimenter just can't find a significant correlation between variables
b. some correlations are always perfect regardless of how they are measured
c. sampling only a narrow variety of values reduces the correlation obtained
d. correlations can only be calculated for interval and ratio data
Question 2
In rounding, if the remainder beyond the last digit is greater than 1/2, add one to the last digit. If the remainder is less than 1/2, leave the last digit as it is.
Indicate whether the statement is true or false