1 of 8 0-day streak

Compare a numerical variable across groups

Question 1 of 8

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Waiting time (seconds) at a crossing was recorded for the central crossing and the east crossing

Group 1: The central crossing

Group 2: The east crossing

(a)4 marks

Find the median and the IQR for each group

Median (The central crossing) IQR (The central crossing) Median (The east crossing) IQR (The east crossing)

(b)1 mark

Which group's typical value is higher?

The east crossing

The central crossing

About the same

Which group has the larger IQR?

About equally variable

The east crossing

The central crossing; it has the larger range

The central crossing