The frequency distribution mean > Median > Mode is called __________?
A. Negatively
B. Symmetrical
C. +vely
D. One
The second moment about mean is _____?
The second moment about mean is _____?
A. Variance
B. Mean
C. S.D.
D. Mode
suppose for 40 observation, the variance is 50. If all the observation are increased by 20, the variance of these increased observation will be_________?
suppose for 40 observation, the variance is 50. If all the observation are increased by 20, the variance of these increased observation will be_________?
A. 50
B. 70
C. 50/20
D. 50-20=30
Standard deviation is always calculated from _____________?
Standard deviation is always calculated from _____________?
A. Mean
B. Median
C. Mode
D. G.M.
Mean deviation =______ S.D?
Mean deviation =______ S.D?
A. 2/3
B. 4/5
C. 5/6
D. 6/5
The sum of the squares of deviations is the least when measured from____________?
The sum of the squares of deviations is the least when measured from____________?
A. A.M.
B. Median
C. Mode
D. G.M.
If Skewed distribution the three averages mean, median and mode are ________?
If Skewed distribution the three averages mean, median and mode are ________?
A. Identical
B. Different
C. Zero
D. None of these
The sum of powers of deviation from mean is zero is called __________?
The sum of powers of deviation from mean is zero is called __________?
A. Mean
B. Lack
C. Normal
D. Skewed
First moment about origin is always equal to _______________?
First moment about origin is always equal to _______________?
A. A.M.
B. variance
C. Zero
D. None of these
The value of interval x ± S include _______________?
The value of interval x ± S include _______________?
A. 49.45%
B. 95.45%
C. 68.27%
D. 99.73%