Question

49. The standard deviation of -5, -5, -5, -5, 5 is:
(a) -5
(b) +5
(c) O
(d) -25​

Answer 1

Step-by-step explanation:

-5×-5×-5×-5

(-)×(-)×(-)×(-)

= -×- =+ -×-=+

+5×+5=+5

therefore ans =+5

Answer 2

The standard deviation would be zero

Given

• 5, -5, -5, -5, 5

To find

• standard deviation

solution

we are provided with the sets of data and ask you find the standard deviation of the given sets of observation.

we know that standard deviation is a measure of dispersion which primarily is used to find the variance of the observation from the central value

A close observation of the given data reveals that all the data are same.

Therefore the central value of the given observation would be negative 5

we are required to find the measure upto which each observation vary from the central value that is -5.

Therefore, the standard deviation would be zero

option C is correct.

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