Question

The standard deviation of a set of 50 items is 6.5. If every item is increased by 5 then the standard deviation will be

Answer 1

Answer=12.69 or 12.7 or 13

Step-by-step explanation:

(50/6.5)+5

Answer 2

Answer:

The new standard deviation will be 6.5.

Step-by-step explanation:

Concept: If each number of an given set is increased or decreased by the same amount the new standard deviation remains unaffected.

Given : The standard deviation of a set of 50 items is 6.5. Each item of the set is increased by 5.

To find : New standard deviation

Solution: Since, each number of the set is increased by 5, the new standard deviation will remain unaffected. So,

Old Standard deviation = 6.5

New Standard deviation = 6.5

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