find the missing frequencies f1 and f2 if the mean of 50 observations is 38.2
ci f
0-10 4
10-20 4
20-30 f1
30-40 10
40-50 f2
50-60 8
60-70 5
Answers
Answered by
253
Solution:
Let us make a table for easy calculation
It is given that Mean is 38.2
now solve eq1 and eq2 to find the value of f1 and f2
Thus, f1 =7
f2= 12
Hope it helps you.
Let us make a table for easy calculation
It is given that Mean is 38.2
now solve eq1 and eq2 to find the value of f1 and f2
Thus, f1 =7
f2= 12
Hope it helps you.
Answered by
110
Answer:
Table:
Now, use the formula:
- Equation 1
Now, total observations are 50.
- Equation 2
Solve equation 1 and 2, we get:
- f₁ = 7
- f₂ = 12
Graph for the lines is in the file attached.
Attachments:
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