Please explain why you choose the answers. A researcher wished to compare the ef
ID: 3064646 • Letter: P
Question
Please explain why you choose the answers. A researcher wished to compare the effect of the different rates of stepping on volunteers' heart rates in a step-aerobies workout. A collection of thirty adult volunteers fifteen women and fifteen men, were selected from a local gym. The men were randomly divided into three groups of five subjects cach. Each group did a standard step-aerobics workout, with Group 1 at a low rate of stepping, Group 2 at a medium rate of stepping. and Group 3 at a rapid rate. The women were also randomly divided into three groups of five subjects each. As with the men, each group did a standard step-acrobics workout, with Group 1 at a low rate of stepping, Group 2 at a medium rate of stepping, and Group 3 at a rapid rate. The mean heart rate at the end of the workout for all the subjects was determined in beats per minute. 10. A partial ANOVA table for these data is given below. Sum of squares 2553.2 70.7 231.7 5762.0 8617.6 Source Group Gender DF Mean square F P-value 0.48 0.623 Group Gender Error Total The profile plot and the P-value for the test for interaction show little evidence of interaction. What can we conclude? A) There is little difference in the heart rates of men and women. B) The change in heart rate due to different stepping rates is similar for men and C) D) women. Changes in stepping rate are positively associated with heart rate. Step exercise is equally beneficial to men and women. 11. In a two-way ANOVA, how many Ftests are possible? A) Zero B) One C) Two D) Three 2. True or False. The assumptions underlying a two-way ANOV A and a one-way ANOVA are different. A) True B) False
Explanation / Answer
10. The profile plot and P-value for the test for interaction show little evidence of interaction.
Changes in stepping rate are positively associated with heart rate.
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11. In a two way ANOVA three F-tests are possible.
Factor A, factor B and interaction.
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12. This is false statement.
The assumptions underlying a two way anova and a one way anove are same.