A researcher suspects that children’s level of anxiety during a test

will interfere with their memories.  He

gives a list of items to be memorized to a sample of children, and gives them a

test to see how many items they can remember. Directly afterwards he also tests

the level of anxiety of each child with an anxiety scale (where higher score

shows a greater level of anxiety).

The researcher draws a scatter plot of the relationship between level of

anxiety and number of items recalled. The result is presented below.

Suppose the researcher uses the data to calculate the Pearson

product-moment correlation (r) coefficient to determine the size of the

relationship between

Which of the following would be most probable as description of r?

(Which of following descriptions of the expected value of r seems to be the

most appropriate?)