Question

Find the mean for the following frequency distribution table. (4)

Height (cm) Frequency

160-162 15

163-165 117

166-168 136

169-171 118

172-174 14​

Answer 1

Answer:

mean= 15+117+136+118+14/5

= 400/5

= 80

mean = 80

Answer 2

Answer:

20

$mean = \frac{sum \: of \:all \: frequencies}{number \: of \: observations} = \frac{15 + 117 + 136 + 118 + 14}{5} = \frac{400}{5} = 20$

I hope it helps you