# Variance and Standard Deviation MCQs Quiz Online PDF Download

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## MCQs on Variance and Standard DeviationQuiz PDF Download

MCQ: If total sum of square is 20 and sample variance is 5 then total number of observations are

- 15
- 25
- 4
- 35

C

MCQ: In manufacturing company, number of employees in unit A is 40, mean is USD $6400 and number of employees in unit B is 30 with mean of Rs. 5500 then combined arithmetic mean is

- 9500
- 8000
- 7014.29
- 6014.29

D

MCQ: If calculated value of total sum of squares in sample variance is larger than variation in data set is considered as

- smaller
- greater
- zero
- negative

B

MCQ: Undesirable consequences which causes estimated population variance to appear less as compared to real results are classified as

- undesired error
- bias
- non-calculate error
- non-zero error

B

MCQ: Formula in which Σ(x-x‾)² is divided by one less than number of observations in sample is classified as

- coefficient of deviation
- mean variance
- sample variance
- population variance

C