Mathematics 4024 · O Level · Averages and measures of spread

Averages and measures of spread — practice question

A survey counted how many people lived in each of 50 houses. The bar chart presents the findings.

(a)[1]

Find the mode.

(b)[1]

Find the median.

(c)[3]

Calculate the mean.

(d)[1]

One of these houses is chosen at random. Find the probability that exactly $3$ people live there.

(e)[3]

Two houses are selected at random from these $50$ houses. Find the probability that exactly one of the two houses has 5 people living there.

Worked solution & mark scheme

This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “$4$” …