If Q1 = 10 and Q3 = 22, what is the interquartile range (IQR)?

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Multiple Choice

If Q1 = 10 and Q3 = 22, what is the interquartile range (IQR)?

Explanation:
The interquartile range measures how wide the middle half of the data sits. It’s found by subtracting the first quartile from the third quartile. With Q1 = 10 and Q3 = 22, the IQR is 22 − 10 = 12. So the middle 50% of the data spans 12 units. The other numbers would correspond to the quartiles themselves (or a sum), not the spread of the middle half.

The interquartile range measures how wide the middle half of the data sits. It’s found by subtracting the first quartile from the third quartile. With Q1 = 10 and Q3 = 22, the IQR is 22 − 10 = 12. So the middle 50% of the data spans 12 units.

The other numbers would correspond to the quartiles themselves (or a sum), not the spread of the middle half.

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