medium · Act math

Two box-and-whisker plots represent the distribution of scores on two different versions of a test. Version X has an interquartile range (IQR) of 15 and a total range of 40. Version Y has an IQR of 20 and a total range of 35.

Based on this information, which of the following must be true?

  1. The median of Version Y must be higher than the median of Version X.
  2. Version X contains fewer outliers than Version Y because its IQR is smaller.
  3. The middle 50% of scores are more spread out in Version Y than in Version X.
  4. The total spread from the highest to the lowest score is greater in Version Y.

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