Chapter 7, Problem 25E

(a)

To determine

To explain does the statement given in the question means that the taller children are generally better readers or not.

Answer to Problem 25E

Yes.

Explanation of Solution

It is given in the question that a researcher studies children in an elementary school and finds a strong positive linear association between height and reading scores.

Thus, from this we can say that, yes the taller children will tend to have higher reading scores as the correlation has a strong positive correlation but this does not imply causation.

(b)

To determine

To explain what might explain the strong correlation.

Explanation of Solution

It is given in the question that a researcher studies children in an elementary school and finds a strong positive linear association between height and reading scores.

A researcher finds the strong correlation between the two that means that the strong positive correlation is due to the older children that is whose ages are more than others as older children are generally both taller and are better readers. Here, age is the lurking variable.