Compare distributions and identify outliers

Answer: −15

1. 30−45=−15.

Answer: Group A

1. A smaller IQR means less spread in the middle half.
2. Group A IQR=20;
3. Group BIQR=40.

Answer: No, the sample sizes are not shown

1. A box plot summarises location and spread.
2. Its width is not a frequency or sample size.