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Stat 152 Team 1
Summary Group
Weight Gain Gained Weight: 54
21.01%
Stayed the same: 16463.81%
Lost Weight: 3915.18%
What caused weight gain? We tested the following factors
Spending on food – not significant Exercise time – not significant Units taken – not significant Courses taken – not significant Living status – not significant
Some have an impact: Gender – men tend to lose weight Class year – sophomores, seniors gain weight
CoefficientsEstimate St. Error T-value Pr(> |t|)
Year 0.06107 0.53761 0.114 0.9097
Units 0.08811 0.04276 2.061 0.0407
Courses -0.08960 0.05118 -1.751 0.0816
Age -0.01590 0.01711 -0.929 0.3541
Gender -0.23923 0.10020 -2.388 0.0179
Habitat 0.04309 0.03379 1.275 0.2038
Bias Students might not be very confident in
telling us their weight Some questions were ambiguous – i.e
numeric scales interpreted as check box Categorical variables are used instead of
continuous and measurable variables Non-response
Missing values substituted with similar units Ignored missing units (missing class is random)