Variance and standard deviation MCQs, variance and standard deviation quiz answers to learn business analytics online courses. Learn measures of dispersion multiple choice questions (MCQs), variance and standard deviation quiz questions and answers. Career assessment test on classification: measures of dispersion, interquartile deviation, relationship: measures of deviation, variance and standard deviation test prep for business analyst certifications.

Practice measures of dispersion test MCQs: if total sum of square is 20 and sample variance is 5 then total number of observations are, with choices 15, 25, 4, and 35 for online business degree. Prepare assessment test for scholarships, online learning variance and standard deviation quiz questions for competitive assessment in business majors for business administration certifications.

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

1. 15
2. 25
3. 4
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

1. 9500
2. 8000
3. 7014.29
4. 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

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

B

MCQ: Undesirable consequences which causes 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

B

MCQ: 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

C