Class 10 Exam > Class 10 Questions > If 7, 2, 9 and 5 occur with frequencies 2, 3,...
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If 7, 2, 9 and 5 occur with frequencies 2, 3, 6 and 4 respectively, then the arithmetic mean is _____.
- a)6.25
- b)6.75
- c)6.27
- d)6.42
Correct answer is option 'C'. Can you explain this answer?
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If 7, 2, 9 and 5 occur with frequencies 2, 3, 6 and 4 respectively, th...
Arithmetic mean =
= 
= 
= 6.27
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If 7, 2, 9 and 5 occur with frequencies 2, 3, 6 and 4 respectively, th...
To find the arithmetic mean, we need to add up all the values and divide by the total number of values. In this case, we have four values: 7, 2, 9, and 5.
Step 1: Multiply each value by its respective frequency
- 7 occurs 2 times, so we have 7 * 2 = 14
- 2 occurs 3 times, so we have 2 * 3 = 6
- 9 occurs 6 times, so we have 9 * 6 = 54
- 5 occurs 4 times, so we have 5 * 4 = 20
Step 2: Add up all the values obtained in step 1
14 + 6 + 54 + 20 = 94
Step 3: Find the total number of values
The total number of values is the sum of the frequencies: 2 + 3 + 6 + 4 = 15
Step 4: Divide the sum obtained in step 2 by the total number of values obtained in step 3
94 / 15 ≈ 6.27
Therefore, the arithmetic mean is approximately 6.27, which corresponds to option C.
Step 1: Multiply each value by its respective frequency
- 7 occurs 2 times, so we have 7 * 2 = 14
- 2 occurs 3 times, so we have 2 * 3 = 6
- 9 occurs 6 times, so we have 9 * 6 = 54
- 5 occurs 4 times, so we have 5 * 4 = 20
Step 2: Add up all the values obtained in step 1
14 + 6 + 54 + 20 = 94
Step 3: Find the total number of values
The total number of values is the sum of the frequencies: 2 + 3 + 6 + 4 = 15
Step 4: Divide the sum obtained in step 2 by the total number of values obtained in step 3
94 / 15 ≈ 6.27
Therefore, the arithmetic mean is approximately 6.27, which corresponds to option C.
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If 7, 2, 9 and 5 occur with frequencies 2, 3, 6 and 4 respectively, then the arithmetic mean is _____.a)6.25b)6.75c)6.27d)6.42Correct answer is option 'C'. Can you explain this answer? for Class 10 2025 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about If 7, 2, 9 and 5 occur with frequencies 2, 3, 6 and 4 respectively, then the arithmetic mean is _____.a)6.25b)6.75c)6.27d)6.42Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 10 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If 7, 2, 9 and 5 occur with frequencies 2, 3, 6 and 4 respectively, then the arithmetic mean is _____.a)6.25b)6.75c)6.27d)6.42Correct answer is option 'C'. Can you explain this answer?.
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