Understanding Graphs 1. It is believed that hunger is partly controlled by exter
ID: 3070374 • Letter: U
Question
Understanding Graphs 1. It is believed that hunger is partly controlled by external (environmental) cues. To investigate this a random sample of 60 first year students was selected and each student was in turn randomly allocated to one of three groups. Each group of 20 students was put into a room with a large clock prominently displayed on the wall, and asked to complete a questionnaire. In the first room, the clock on the wall showed the correct time. In the other rooms the clock was either one hour fast or one hour slow. The actual time, 5.30pm, was the usual evening meal time for all of the students. While the participants filled out the questionnaire, some dry biscuits and cheese were freely available. The weight of the biscuits and cheese consumed by each student was calculated; the means were: 4.30 group, 200gm; 5.30 group, 300gm; and 6.30 group, 400gm. Identify the following: (a) the dependent variable (b) the independent variable (c) a population of interest (d) a sample (e) a statistic that was calculated (f) a variable measured on a nominal scale (g) a variable measured on a ratio scale (h) What did this study find?
Explanation / Answer
a)Food consumption
b) time (4:30,5:30,6:30)
c)Students.
d)60 students assigned in 3 groups.
e) AVG weight of food consumed by students of each group
f) groups based on time
g)weights of food consumed.
h)The finds if there is a relationship between food consumption and time..
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