The height, $$\(h \mathrm{~cm}\)$$, of each of 120 plants is measured. The cumulative frequency diagram shows this information. The information in the cumulative frequency diagram is shown in this frequency table. Calculate an estimate of the mean height. ........................................ $$\(\mathrm{cm}\)$$
Exam No：0580_w20_qp_42 Year：2020 Question No：4(b)(i)
Answer:
\(27.9\) or \(27.91\) to \(27.92 \mathrm{nfww}\)
Knowledge points:
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.
Solution:
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