Question

find the mean of the following.class interval 100-140 140-180 180-220 220-260 260-300 300-340 frequency 25 ,34,50,42,35,14​

Answer 1

Answer:

$100 - 140 = - 40 \\ 140 - 180 = - 40 \\ 180 - 220 = - 40 \\ 220 - 260 = - 40 \\ 260 - 300 = - 40 \\ 300 - 340 = - 40$