Question

Find the mean of the following data by direct and assumed mean method:

Class 15 – 25 25 – 35 35 – 45 45 – 55 55 – 65 65 – 75 75 - 85

Frequency 6 10 5 6 4 2 2​

Answer 1

Answer:

answer is 3.57... if correct mark as braniloeet