Summarizing Numerical Data
Question 1
Which of the following plot types maintain all of the information found in the original data set?
- dot plot ( ) histogram ( ) violin plot ( ) box plot
Question 2
If you wish to see less detail in your histogram and perform more aggregation, which of the following is the best course of action?
( ) switch to a dot plot ( ) switch to a bar chart ( ) instead of presenting the histogram, display the original data frame with the raw data (X) increase the bin width of the histogram ( ) decrease the bin width of the histogram
Question 3
Which word best describes a distribution with a long tail stretching out to the left?
- left skewed ( ) right skewed ( ) unimodal ( ) heteroskedastic
Question 4
In which situation does the median do a better job than the mean at capturing the center of a distribution? Select the best answer.
( ) when the median is less than the mean ( ) when the median is greater than the mean (X) when the variable under study is known to have a strongly skewed distribution ( ) when the mode doesn’t exist