Variance and Standard Deviation Multiple Choice Questions (MCQ) PDF Download

MCQ 1: If total sum of square is 20 and the sample variance is 5 then total number of observations are

1. 15
2. 25
3. 4
4. 35

MCQ 2: In manufacturing company, the number of employees in unit A is 40, the mean is USD $6400 and the number of employees in unit B is 30 with the mean of Rs. 5500 then the combined arithmetic mean is

1. 9500
2. 8000
3. 7014.29
4. 6014.29

MCQ 3: if the calculated value of total sum of squares in sample variance is larger than the variation in data set is considered as

1. smaller
2. greater
3. zero
4. negative

MCQ 4: The undesirable consequences which causes the estimated population variance to appear less as compared to real results are classified as

1. undesired error
2. bias
3. non-calculate error
4. non-zero error

MCQ 5: The formula in which Σ(x-x‾)² is divided by one less than number of observations in sample is classified as

1. coefficient of deviation
2. mean variance
3. sample variance
4. population variance