Assignment 2 - Exploratory Data Analysis II

Circle your lab meeting time:

Monday 9:15	Monday 12:15	Monday 3:15	Wednesday 9:15	Wednesday 12:15

1. A variable from the cereal data set that is skewed to the right is _________________.

   Draw its boxplot on the back of the sheet.

2. Sketch the boxplot of the variable potass (mg potassium per serving) on the back of the sheet. Describe how this plot indicates the presence of potential outliers.

    

    

   The cereal brands indicated as outliers on the box-and-whisker plot are:

    

    

   In addition to high potassium levels, a characteristic (apparent in the brand names) common to them all is:

    

    

3. Sketch a side-by-side boxplot of sugar content versus shelf on the back of the paper. Does the distribution of sugar content vary by grocery shelf?

    

    

   Give a hypothetical explanation for the pattern you see in the plot.