Question

reszelts
OS
The heights of 10 girls were measured
in cm
andl
the
were
follows
143, 148, 435. 150. 128, 139, 149, 146, 151.
132
fine the number of girls whose heights are less than the mean height​

Answer 1

Answer:

$mean \: = \frac{sum \: of \: observations}{number \: of \: observations} \\ = \frac{143 + 148 + 435 + 150 + 128 + 139 + 149 + 146 + 151 + 132}{10} \\ \\ = \frac{1721}{10} \\ = = > 172.1$

there are 10 number of girls who heights are less than the mean height