 # Category: Statistics Mcqs

## In a binomial distribution mean and variance is ________________? A. Variance > mean
B. Mean < variance
C. Variance ≠ mean
D. None of these

## We must arrange the data before calculating _________? A. Mean
B. Median
C. Mode
D. G.M.

## In inferential statistics, we study____________? A. the methods to make decisions about population based on sample results
B. how to make decisions about mean, median, or mode
C. how a sample is obtained from a population
D. None of the above

## In a binomial distribution the probability of ___________ changes from trial to trial? A. Failure
B. Experiment
C. Success
D. Out come

## If the standard deviation of the values 2,4,6,8 is 2.33, then the standard deviation of the values 4,6,8,10 is_____________? A. 0
B. 2.58
C. 4.66
D. 2.33

## The standard deviation is affected by the value of every____________? A. Relative Dispersion
B. Observation
C. Absolute
D. Items

## If a card is chosen from a standard deck of cards, what is the probability of getting a five or a seven ? A. 4/52
B. 1/26
C. 8/52
D. 1/169

## The mean and variance of binomial distribution are ______________? A. Unequal
B. Equal
C. Symmetrical
D. None

## Binomial distribution is symmetrical when P=___________________? A. n
B. x
C. q
D. 1 – P

## The sign test assumes that the_______________? A. Samples are independent
B. Samples have same mean
C. Sample are dependent
D. The Wilcoxon Signed Rank test is used