CAIE IGCSE Mathematics Extended E9.2 Interpreting Statistical Data Topic Practice

Students in class P take a test.
These statistics show information about their marks.
- lower quartile =38
- median =53
- interquartile range =28
- range =81
- highest mark =96

Students in class Q take the same test.

For class Q, the median is 49 and the interquartile range is 35.
Make two comments comparing the distribution of marks for class P with that of class Q.
1.
2.

The box-and-whisker plot shows information about the mass, in kg, of some parcels.

Find the mass of the heaviest parcel.
$$\mathrm{kg}$$

The box-and-whisker plot shows information about the marks scored by some students in a test.

This box-and-whisker plot shows information about the marks scored by the same students in a second test.

Make one comparison between the distributions of marks in the two tests.