SSATSuite
What do we see?

Comparison of means, medians, or standard deviations.

What do we understand?
  • Means: influenced by outliers.
  • Median: ALWAYS RECALCULATE.
  • Standard deviation: directly proportional to range.

Question 1 of 4

Dot plot of 13 values ranging from 720 to 732

A data set consisting of 13 values is represented in the dot plot. An additional observation of 251 days is added to the original data set to create a new data set of 14 values. Which statement best compares the mean and median of the new data set to the mean and median of the original data set?