Arithmetic mean of two positive numbers “X” and “Y” is_________________?
A. ab2
B. 2a2
C. (a+b)/2
D. a−b2
E. 2a+b
Basic Statistics Mcqs
The calculation of mean and variance is based on______________?
The calculation of mean and variance is based on______________?
A. Small values only
B. Large values only
C. Extreme values only
D. All values
If β2=m4m22
If β2=m4m22<3, the distribution is called______________?
A. Normal
B. Mesokurtic
C. Leptokurtic
D. Platykurtic
The degree of peakedness is called__________________?
The degree of peakedness is called__________________?
A. Dispersion
B. Skewness
C. Symmetry
D. Kurtosis
Quartile Coefficient of skewness lies between______________?
Quartile Coefficient of skewness lies between______________?
A. 0 and 1
B. -1 and +1
C. -1 and 0
D. None of these
If the third moment about mean is zero then distribution is_______________?
If the third moment about mean is zero then distribution is_______________?
A. Mesokurtic
B. Positively Skewed
C. Symmetrical
D. Negatively Skewed
____________ is used to criterion of consistency i.e for consistence performance?
____________ is used to criterion of consistency i.e for consistence performance?
A. Range
B. Standard Deviation
C. Coefficient of Variation
D. Mean Deviation
For a symmetrical distribution approximately 68% of the cases are included between _________________?
For a symmetrical distribution approximately 68% of the cases are included between _________________?
A. X¯¯¯¯−S and X¯¯¯¯+S
B. X¯¯¯¯−2S and X¯¯¯¯+2S
C. X¯¯¯¯−3S and X¯¯¯¯+3S
D. None of these
If Y=−8X − 5 and SD of X is 3, then SD of Y is _______________?
If Y=−8X − 5 and SD of X is 3, then SD of Y is _______________?
A. 8
B. 3
C. 5
D. 24
E. None
The variance of a constant is_______________?
The variance of a constant is_______________?
A. Zero
B. Constant
C. a
D. None