FAN + MEDAL

The table below shows data from a survey about the amount of time students spend doing homework each week. The students were either in college or in high school:

Question

FAN + MEDAL 

The table below shows data from a survey about the amount of time students spend doing homework each week. The students were either in college or in high school:

anonymous · Answer

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anonymous · Answer

Which of the choices below best describes how to measure the spread of this data?
(Hint: Use the minimum and maximum values to check for outliers.)

a. Both spreads are best described with the IQR.
b. Both spreads are best described with the standard deviation.
c. The college spread is best described by the IQR. The high school spread is best described by the standard deviation.
d. The college spread is best described by the standard deviation. The high school spread is best described by the IQR.

I thought it was C, but somebody said they got that wrong.