Classes: 0-20 20-40 40-60 60-80 80-100 100-120
Frequency: 20 35 52 44 38 31
Find the mean. Pls don't spam.
Answers
Answered by
1
Answer:
The mean is 62.54
Step-by-step explanation:
- Lower limit of every class = l and upper limit = u
- x =
- Frequency is represented by 'f'.
- f*x = fx
- Table made with the mentioned date:
Classes f x fx
- 0-20 20 10 20*10 = 200
- 20-40 35 30 35*30 = 1050
- 40-60 52 50 52*50 = 2600
- 60-80 44 70 44*70 = 3080
- 80-100 38 90 38*90 = 3420
- 100-120 31 110 31*110 = 3410
- ∑f = 20 + 35 + 52 + 44 + 38 + 31 = 220
- ∑fx = 200 + 1050 + 2600 + 3080 + 3420 + 3410 = 13760
- Mean = ∑fx/∑f =13760/220 = 62.54
- So the mean is 62.54
Similar questions