Measures of Dispersion, Moments and Skewness Multiple Choice Questions and answers (mcqs)

 1- Deviation from Average is called as:

(A) Dispersion (B) Variance

Option (A) is correct.

2- The Coefficient of Mean Deviation is:

(A) Mean Deviation/Average (B) Average

Option (A) is correct.

3- The Mean of squared deviation from mean is defined as:

(A) Standard Deviation (B) Variance

Option (B) is correct.

4- If data is more consistent then co-efficient of variation will be:

(A) Least (B) Maximum

Option (A) is correct.

5- Given data:

X: 4,4,4,4

Variance=?

(A) 1 (B) 0

Option (B) is correct.

6- Var(x+a)= ?

(A) Var(x) (B) Var(x-a)

Option (A) is correct.

Note: Var(x-a) = Var(x)

7- Given data: Var(x)=2, Var(y)=4 then find Var(x - y)= ?

(A) 7 (B) 6

Option (B) is correct.

8- Mean of Deviation to which power are raised are called as:

(A) Moments (B) Mean Deviation

Option (A) is correct.

9- If Mean > Median > Mode, then distribution is:

(A) Positively Skewed (B) Negatively Skewed

Option (A) is correct.

Note : If Mean < Median < Mode then distribution is Negatively Skewed.

10- If 3rd Moment about Mean (m3) = 0 , then distribution is:

(A) Skewed (B) Symmetrical 

Option (B) is correct.

11- The degree of peakdness is defined as:

(A) Kurtosis (B) Moment

Option (A) is correct.

12- The Standard value of Kurtosis is:

(A) 9 (B) 3 

Option (B) is correct.

13- Second moment about mean (m2) =:

(A) Variance (B) Standard Deviation 

Option (A) is correct.

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