Question

The root-mean- square deviation from mean is known as:-
a. Mean deviation
b. Standard deviation
C. quartile Deviation
D. None

Answer 1

b)standard deviation

Answer 2

Answer:

The correct answer is b. Standard Deviation

Step-by-step explanation:

Standard deviation is the root-mean square deviation from the mean. The Standard deviation is also called as root mean square deviation or mean square error or mean error.

Standard deviation is the measure of dispersion of a set of data from its mean. It is used to measure the absolute variability of distribution. The Standard deviation is denoted by σ. The formula for Standard Deviation is given by,

σ =√1/N ∑(X−μ)² , where

N = total no. of observations

X = Value in the data distribution

μ = Assumed mean

If standard deviation is high, then the magnitude of deviation from the mean value would be high.

The standard deviation has various applications in various domains. Some of the areas of application include biological studies, financial studies etc..,

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