Physical activity generally declines when students leave high school and enroll
ID: 3224111 • Letter: P
Question
Physical activity generally declines when students leave high school and enroll in college. This suggests that college is an ideal setting to promote physical activity. One study examined the level of physical activity and other health-related behaviors in a sample of 1166 college students. Let's look at the data for physical activity and consumption of fruits. We categorize physical activity as low, moderate, or vigorous and fruit consumption as low, medium, or high. Here is the two-way table that summarizes the data:
Fruit consumption Low Medium High Total Low702514109 Moderate198130107435 Vigorous295160167622 Total5633152881166 Fruit consumption Low Moderate Vigorous Total Low70198295563 Medium25130160315 High14107167288 Total1094356221166
Compute the contributions (±±0.001) to the 22 statistic for each cell in the table.
Physical Activity Fruit consumption Low Medium Vigorous Low Medium HighExplanation / Answer
chi square contribution is given in above table/
please reply
Observed O low medium Vigorous Total low 70 198 295 563 medium 25 130 160 315 high 14 107 167 288 Total 109 435 622 1166 Expected E=rowtotal*column total/grand total low medium Vigorous Total low 52.630 210.039 300.331 563 medium 29.447 117.517 168.036 315 high 26.923 107.444 153.633 288 Total 109 435 622 1166 chi square =(O-E)^2/E low medium Vigorous Total low 5.733 0.690 0.095 6.517 medium 0.672 1.326 0.384 2.382 high 6.203 0.002 1.163 7.368 Total 12.607 2.018 1.642 16.2667