Stat 152 Team 1 Summary Group. Weight Gain Gained Weight: 54 21.01% Stayed the same: 164 63.81% ...

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)