Question:
The arithmetic mean and standard deviation of a series of 20 items were calculated by a student as 20 cm and 5 cm, respectively. But while calculating them an item 13 was misread as 30. The correct standard deviation is
The arithmetic mean and standard deviation of a series of 20 items were calculated by a student as 20 cm and 5 cm, respectively. But while calculating them an item 13 was misread as 30. The correct standard deviation is
Updated On: Apr 27, 2024
- 4.53
- 4.66
- 4.95
- 4.88
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The Correct Option is B
Solution and Explanation
The correct option is(B): 4.66
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