Latifah Measures the Height of Four- and Five-Year-Olds

Multiple Choice

Latifah measures the height of four- and five-year-olds. To her surprise, she finds no correlation between height and age. What is most likely responsible for this result?

A) Correlational methods cannot be used to calculate age and height.
B) A curvilinear relationship exists between the variables.
C) The range of the variables has been restricted.
D) The variability in the sample will not allow the accurate calculation of a correlation coefficient.