Question

Find mean by using step deviation
20-29 10
30-39 8
40-49. 6
50-59. 1
60-69. 2

Answer 1

Answer:

Class 0 – 9 || 10 – 19 |20 – 29 |30 – 39 |40 – 49 |50 – 59 |60 – 69 |70 – 79 Frequency 4 6 12 6 7 5 2 8 Solution " * -- d d Class Frequency ...