Question

Find the mean of the following data. Class Interval 1-20 21-40 41-60 61-80 81-100 101-120 Frequency 10 35 52 61 32 29

Answer 1

Answer:

mean =

Step-by-step explanation:

class Frequency. fi×xi

1-20 10

21-40. 35

41-60. 52

61-80. 61

81-100. 32

101-120. 29

Total N= 219