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The table gives some information
about the heights of 60 boys.
a) Complete the boxplot for this information.
130
140
150
160
height (cm)
170
180
Least height
Greatest height
Lower quartile
Upper quartile
Median
(2)
142 cm
181 cm
149 cm
160 cm
156 cm
(3)
b) Work out an estimate for the number of these boys with a height between
149 cm and 181 cm.

Sagot :

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