Question

40. Find the mean, mode and median of the following data:
Classes
0 - 10
10-20
20-30
30240
40-50
50 - 60
60 - 70
Frequency
3
8
10
15
7
4
3

برا​

Answer 1

Answer:

Mean vs Median

The mean (informally, the “average“) is found by adding all of the numbers together and dividing by the number of items in the set: 10 + 10 + 20 + 40 + 70 / 5 = 30.

The median is found by ordering the set from lowest to highest and finding the exact middle. The median is just the middle number: 20.