The frequency table shows the times, $$$t$$$ minutes, each of 100 children spent exercising in one week. Calculate an estimate of the mean time. ...................................... $$$\min $$$

Mathematics

IGCSE&ALevel

CAIE

Exam No：0580_w20_qp_41 Year：2020 Question No：3(b)(i)

Answer:

$87.4 \mathrm{nfww}$

E9.5.1 Calculate an estimate of the mean for grouped and continuous data.

E9.5.2 Identify the modal class from a grouped frequency distribution.

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