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 50 respectively. Find the missing frequencies
class:30-40 |40-50| 50-60 | 60-70 | 70-80 | 80-90 | 90-100 |
Frequency:3 | ... | 12 | 15 | ... | 3 | 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: …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:

Answer 2

Answer:

Step-by-step explanation: