Instruction 15-10
Parents Complain That Children Read Too Few Storybooks

question 45

Multiple Choice

Instruction 15-10
Parents complain that children read too few storybooks and watch too much television nowadays.A survey of 1,000 children reveals the following information on average time spent watching TV and average time spent reading storybooks.
| Average time spent reading story books |
$$\begin{array} { | l | c | c | c | } \hline \begin{array} { l } \text { Average time spent } \\\text { watching TV }\end{array} & \begin{array} { c } \text { Less than } \\1 \text { hour }\end{array} & \begin{array} { c } \text { Between } \\1 \text { and 2 hours }\end{array} & \begin{array} { c } \text { More than } \\2 \text { hous }\end{array} \\\hline \text { Less than 2 hours } & 90 & 85 & 130 \\\hline \text { More than 2 hours } & 655 & 32 & 8 \\\hline\end{array}$$
-Referring to Instruction 18-10,how many children in the survey spent less than 2 hours watching TV and more than 2 hours reading story books on average?

• A)687
• B)8
• C)175
• D)130

---

Definitions:

Variables

Elements, features, or factors that can be changed and measured in an experiment to determine their effects.

Main Effect

In analysis of variance, when a factor or an independent variable has a significant effect upon the outcome variable.

ANOVA

Short for Analysis of Variance, a set of statistical techniques used to compare the means of three or more samples.

Factor

An element that contributes to a particular result or situation, often used as a variable in experiments and statistical analysis.