Question

Find the mean for the following data;

Variable : 0-10 10-20 20-30 30-40 40-50 50-60 60-70

Frequency: 10 20 35 40 25 25 15​

Answer 1

Answer:

mean =sum of all the observations/total number of observations

So,

10+20+35+40+25+25+15/7

170/7

24.2875....