Averages from Frequency Tables

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Question 25
Hard

Adam is measuring the heights in cm of his tomato plants.

Height (cm)Frequency
140<h≤150140 < h \leq 150140<h≤1507
150<h≤160150 < h \leq 160150<h≤16010
160<h≤170160 < h \leq 170160<h≤17015
170<h≤180170 < h \leq 180170<h≤18019
180<h≤200180 < h \leq 200180<h≤2009
a.

Estimate the mean height.
Give your answer correct to 1 decimal place.

[3]
b.

Explain why your answer to part (a) is an estimate.

[1]

Averages from Frequency Tables Questions

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