QUESTION 2 MULTIPLE REGRESSION

In a study, 210 healthy elderly adults (ages 55 to 85) were recruited and randomized to one of three groups (n=70 per group).

The Control group agreed to be evaluated but was not assigned to any intervention program.

The Walking group (aerobic exercise) walked three days a week for 40 minutes.

The Yoga group (yoga and toning exercises, which are non-aerobic exercises) participated in group yoga sessions 3 days a week.

The dependent variable for this study is the percent change in hippocampus volume, where positive change values indicate an increase in hippocampus volume (e.g., 1.3 indicates a 1.3% increase in volume) and negative change values indicate a reduction in hippocampus volume (e.g., -1.7 indicates a 1.7% decrease in volume). Are those who exercised had less decline in hippocampus volume than those in the control group.

\fElders 88 1.9 56 99 -0.1 88 120 1.6 108 -0.9 117 -0.2 51 100 0.9 52 135 0. 63 84 0.6 54 102 -0.9 104 -0.5 81 .2.5 115 1.6 126 -1.1 92 2.5 70 107 -1.2 71 97 72 100 -0.8 73 105 .0.8 74 87 0.8 76 1.4 77 1.5 78 11 -0.7 1.7 80 1.4 81 0.5 82 83 113 1.2 84 840888378 86 1.8 102 -0. 1 111 1.1 37 124 0.5 38 106 -0.2 39 57 105 1.5 122 0.4 128 -0.2 92 100 -0.4 93 98 -0.1 79 0.1 106 0.4 96 99 0.3 97 -1.6 98 93 0.6 99 32 38081838 8389382389388 1.2 100 60 -1.6 101 83 0.2 102 112 -1.6 103 91 -0.5 104 111 -1.3 105 83 -0.9 106 128 1.6 107 103 1.2 108 69 -1.2 109 89 0.4 Page 2Description of the study sample Standard Variable Mean Deviation Minimum Maximum Age IQ Description of the study sample Variable n % Sex Male Female