1

Here are the number of siblings for 7 children:

11, 3, 5, 3, 9, 10, 4

Write down the median. [1]

2

The frequency table shows the cars sold per day of some days. Calculate the mean cars sold per day. Give your answer to 1 decimal place.

[3]

3

A day has these 4 cars sold per day:

9, 3, 11, 4

One more value is added so that the mean of all $5$ values becomes $8$. What value must be added? [3]

4

The grouped frequency table shows the length of 16 leaves. Work out an estimate for the mean length. Give your answer to 1 decimal place.

[3]