CIE iGCSE Maths C9.3 Averages and range Exam Style Practice Questions- Paper 1

Question

The stem-and-leaf diagram shows the number of hours that each of 16 students studied last week.

Find:

(a) the median

(b) the mode

▶️ Answer/Explanation

Solution

Ans:

(a) 28 (median of 16 values is average of 8th and 9th values: (27+29)/2)

(b) 21 (appears most frequently – twice)

Question

125 people taste a new drink.
Each person gives a score out of 5.
The bar chart shows the results.

Calculate the mean score.

▶️ Answer/Explanation

Solution

Ans: 3.08

Multiply each score by its frequency: (0×4) + (1×15) + (2×23) + (3×36) + (4×19) + (5×28) = 385

Divide total by number of people: 385 ÷ 125 = 3.08

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