Mathematics 4024 · O Level · Averages and measures of spread

Averages and measures of spread — practice question

Over one day, the temperature, in $^\circ\text{C}$, was measured at intervals of $2$ hours. The twelve readings are: $-3, -2, -1, 1, 2, 4, 5, 4, 2, 0, -2, -2$.
(a)[1]

Determine the median.

(b)[1]

Calculate the mean.

(c)[1]

Calculate the difference between the highest and the lowest of these temperatures.

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