Solve the Problem

question 240

Essay

Solve the problem.
-The data below represents the amount of television watched per week (in hours) for 40 randomly selected
teenagers. $$\begin{array} { | r r r r r r r r r r | } \hline 13 & 4 & 17 & 14 & 9 & 6 & 7 & 5 & 14 & 12 \\20 & 16 & 0 & 15 & 10 & 6 & 5 & 3 & 13 & 14 \\15 & 5 & 3 & 5 & 8 & 11 & 12 & 13 & 14 & 7 \\4 & 6 & 9 & 13 & 3 & 14 & 24 & 15 & 17 & 20 \\\hline\end{array}$$

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Definitions:

Correlation

A statistical measure that indicates the extent to which two or more variables fluctuate together.

Ex Post Facto

A research design that examines the effects of an independent variable on a dependent variable after the event has occurred.

Random Assignment

A method in experimental design where study participants are allocated to different groups on a random basis to reduce bias.

Experimental

Relating to a controlled study involving variables manipulated to determine cause-and-effect relationships.