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The mean of the data in the following table is 50. Find the missing frequencies f, and f. Class : 10 - 30 30 - 50 50 - 70 | 70-90 90 - 110 Total Frequency: 90 A 30 40 200?
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The mean of the data in the following table is 50. Find the missing fr...
Class Frequency Table
- Class: 10 - 30
- Frequency: 30
- Class: 30 - 50
- Frequency: 40
- Class: 50 - 70
- Frequency: f
- Class: 70 - 90
- Frequency: 20
- Class: 90 - 110
- Frequency: f
- Total Frequency: 90
Solution
Given that the mean of the data is 50 and the total frequency is 90.
Using the formula for finding the mean:
Mean = (sum of all observations) / (total frequency)
50 = (10*30 + 30*40 + 50*f + 70*20 + 90*f) / 90
4500 = 300 + 1200 + 50f + 1400 + 90f
4500 = 2600 + 140f
1900 = 140f
f = 13.57
Since frequency must be a whole number, we can round up the value of f to 14.
Therefore, the missing frequencies are:
- Class: 50 - 70
- Frequency: 14
- Class: 90 - 110
- Frequency: 14
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The mean of the data in the following table is 50. Find the missing fr...
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The mean of the data in the following table is 50. Find the missing frequencies f, and f. Class : 10 - 30 30 - 50 50 - 70 | 70-90 90 - 110 Total Frequency: 90 A 30 40 200?
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The mean of the data in the following table is 50. Find the missing frequencies f, and f. Class : 10 - 30 30 - 50 50 - 70 | 70-90 90 - 110 Total Frequency: 90 A 30 40 200? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about The mean of the data in the following table is 50. Find the missing frequencies f, and f. Class : 10 - 30 30 - 50 50 - 70 | 70-90 90 - 110 Total Frequency: 90 A 30 40 200? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The mean of the data in the following table is 50. Find the missing frequencies f, and f. Class : 10 - 30 30 - 50 50 - 70 | 70-90 90 - 110 Total Frequency: 90 A 30 40 200?.
The mean of the data in the following table is 50. Find the missing frequencies f, and f. Class : 10 - 30 30 - 50 50 - 70 | 70-90 90 - 110 Total Frequency: 90 A 30 40 200? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about The mean of the data in the following table is 50. Find the missing frequencies f, and f. Class : 10 - 30 30 - 50 50 - 70 | 70-90 90 - 110 Total Frequency: 90 A 30 40 200? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The mean of the data in the following table is 50. Find the missing frequencies f, and f. Class : 10 - 30 30 - 50 50 - 70 | 70-90 90 - 110 Total Frequency: 90 A 30 40 200?.
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