2. Describing Data with Tables and Graphs

Which of the following best explains why a graphical display of data might appear skewed, and how can you help ensure the data is not misleadingly skewed when visualizing it?

When comparing the boxplots of two groups, which of the following should be done?

Typically, numerical information is most effectively presented through which two of the following: bar charts, pie charts, histograms, or scatterplots?

The following data set shows the number of overtime hours that 12 employees worked in a month. Construct a frequency distribution, suing a lower class limit of 3 and a class width of 4.

Which type of data visualization is most appropriate for showing the composition of values within a categorical variable?

Which type of graph is most appropriate for displaying the means $\mathrm{x̅}$ of several different treatments?

Which of the following would not be a valid way to summarize or visualize a categorical variable?

Use the frequency distribution below to find the class width and class midpoints.