Sum of obsolete deviations from _____ is least?

A. Mean
B. Median
C. Harmonic
D. Mode

The term variance introduced by ___________?

A. Ronald Fisher
B. Karl Pearson
C. John Tukey
D. None of these

Who give the concept of standard deviation and CV?

A. R.A Fisher
B. John Tukey
C. Karl Pearson
D. All of the above

Confidence interval is a measure of?

A. Accuracy
B. Precision
C. Error
D. All of above

Confidence interval should be ___________?

A. Shorter
B. Wider
C. Large
D. Small

Two mutually exclusive events are __________?

A. Dependent
B. Independent
C. Overlapped
D. None of These

If A and B are mutually exclusive then?

A. P(AorB) =0
B. P(AandB)=0
C. P(AnorB)=0
D. P(AeitherB)=0

In stratified sampling the strata should be _________?

A. Nonoverlapped
B. Overlapped
C. Same
D. Not equal

If p=0.6 and q=0.4 than shape of the binomial distribution?

A. Positively skewed
B. Negatively skewed
C. Symmetric
D. Bell shaped

If p=q than the shape of binomial distribution?

A. Positively skewed
B. Negative skwed
C. Symmeteric
D. No shape