CIE iGCSE Maths E9.3 Averages and measures of spread Exam Style Practice Questions- Paper 2

Question

The number of items that each of 22 people buy in a supermarket is shown in the stem-and-leaf diagram.

(a) Find the mode.

(b) Find the median.

▶️ Answer/Explanation

Solution

Ans: (a) 22 (b) 30

(a) Mode is most frequent value: 22 appears most in the data.

(b) Median is average of 11th and 12th values (for 22 people): both are 30.

Question

Some students were asked how many books they each had in their school bags.
The table shows some of this information.

The mean number of books is 7.6 .
Calculate the value of x.

▶️ Answer/Explanation

Answer: 13

Total books = Mean × Total students → (5×4)+(6×7)+(7×10)+(8×x)+(9×5) = 7.6×(4+7+10+x+5). Solve for x.

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