Questions in this assignment are based on a data frame called FatMice18, which contains data for 18 mice. Mice were randomly assigned to one of two light treatments: LD (anormal light/dark cycle) or LL (light in the day and light at night as well). The researchers tracked the weight gained by each mouse (in grams) over four weeks of this light treatment.

The variables in the data frame are:

• Light Light treatment: LD = normal light/dark cycle or LL = bright light at night
• WgtGain4 Weight gain in grams over a four week period
• CageLoc The location of the cage in the research lab (on the top row or bottom row)

Here's the result of running head(FatMice18):

S MyCalStateLA - Home X Reading List X Quiz: Reading Quiz 6 X Course Hero X + X https://calstatela.instructure.com/courses/73494/quizzes/295708/take bottom row) CAL STATE LA Spring Semester 2022 Here's the result of running head (FatMice18) : Home Light WgtGain4 CageLoc Announcements LL 10 top row LL 10 top row Account Grades LL 11 bottom row QUIA WNA LL 9 bottom row People LL 12 top row Dashboard LL 9 bottom row Modules Courses Reading List Calendar D Question 1 3 pts Inbox 1. If you've calculated the variance for WgtGain4 , what have you found? History O Roughly the average residual from the empty model, in grams Studio O Roughly the average squared residual from the empty model, in squared grams O Roughly the total squared residual from the empty model, in squared grams Help O The sum of the residuals from the mean 63.F 7:48 PM Clear 3/12/2022 2