Question

In the following distribution, the frequencies of two classes were missing.
However, the mean and total frequency of the data are given to be 62 and
6
50 respectively. Find the missing frequencies
Class
:30-40 40-50 50-60 | 60-70 70-80 80-90 90-100
3
Frequency:
12
3
15
2​

Answer 1

Answer:

The mean of the following data is 42, find the missing frequencies x and y if the sum of the frequencies is 100. Class interval: 0−10: 10−20: 20−30: 30−40: 40−50: 50−60: 60−70: 70−80: Frequency : 7: 10: x: 13: y: 10: 14: 9: Answer: The given data is shown as follows: Class interval: Frequency (f i) Class mark (x i) f i x i: 0−10: 7: 5: 35: 10−20: 10: 15: 150: 20−30: x: 25: 25x: 30−40: 13: 35: 455: 40−50: y: 45: 45y: 50−60: …

Step-by-step explanation: