Belsky, Weinraub, Owen, and Kelly (2001) reported on the effects of preschool care on the development of young children. One result suggests that children who spend more time away from their mothers are more likely to show behavioral problems in kindergarten. Suppose that a kindergarten teacher is asked to rank order the degree of disruptive behavior for the n = 20 children in the class. The researchers then interview each childs parents to determine how much time the child spent in preschool. The researchers plan to use the data to determine whether there is a relationship between preschool experience and disruptive behavior.

IV:

DV:

Null:

Alternate:

Descriptive statistics:

Inferential statistics: