Question

The heights (in cm) of 40 boys were measured and recorded as under:
Height (in cm)
165
170
175
180
Number of boys 9 8 11 12
Find the mean height​

Answer 1

Answer:

690 is the mean value of this record

Answer 2

The heights (in cm) of 40 boys were measured and recorded as under:

Height (in cm)

165

170

175

180

Number of boys 9 8 11 12

Find the mean height

Answer:

690 is the mean volume of this record