2-8-2e16 Exercise 7 Television Viewing, Books, and Reading Histogram:I Statistic

Question

2-8-2e16 Exercise 7 Television Viewing, Books, and Reading Histogram:I Statistical Guide A histogram has vertical bars. The scores on a continuous variable are placed on th horizontal axis (ie.x-axis). For instance, age is a continuous variable because there are no gap between the ages of 0 and 1, between the ages of 1 and 2, and so on. The vertical axis (ie, -axis shows the frequency, percentage, or rate of occurrence. An outlier is an observation that is far from the other observations. For instance, Figure clearly has outliers. (Sce Figure 3 on the next page.) The mode in a histogram is the most frequently occurring score. In the figures below, the scores are "Viewing time (hours per week)." "Number of books," and "Amount of reading (times per two weeks). Excerpt from the Research Article Thirty preschool children and their primary caregivers participated. Participants were We assessed the quality of the home environment with items inquiring about the number of We assessed television viewing with three items, which asked parents to estimate their The sample frequencies for the variables reflecting the educational quality of the home recruited from Chapel Hill and Durham, North Carolina, public housing communities and Head Start programs children's books in the home, frequency of parent-child joint reading, and parental instruction. children's viewing time separately for weekdays, Saturdays, and Sundays; these items were later combined to yield a single index of viewing time per week. environment are displayed in Figures 1-3. Figure I. Children's television viewing time 10 LS 2025 0 3 3 40 4 Viewing tie Choun er wprk) refers to the number of ehildren in each category of viewing time. Clake, A. T, & Kurte-Costes, B.(1397 Mtayjhune). Television viewing, educational quality of the home Note: Telexision viewing time per week for the sample of 30 preschool children from low-income families. Frequency Source: envirorment, and school readiness, Josurnal of Educational Research, 90, No. 5, 2 from the Helen Dwight Reid Educational Foundation. Published by Heldref Publications, Washington, DC 20036-1802 Copyright O 1997 9-285. Repristed with permission 18

Explanation / Answer

1) in the 1st histogram the 40-45 hours have 2 frequency hence answer will be 2

2)the class interval of 20-25 in the 1st histogram has the highest frequency of 5 hence the highest is 20-25

3)in the 2nd histogram the inerval of 20-30 books have 10 frequency therefore answer will be 10 childrens

4) in histogram 3 the interaction between 14-16 times has frequency 6 therefore the answer will be 6

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