Business Statistics and Research Methods MCQ Questions and Solutions with Explanations | Commerce

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21.
Arithmetic mean of a group of 100 items is 50 and of another group of 150 items is 100. What will be the mean of all items?

A. 75

B. 100

C. 80

D. None of the abvoe

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22.
If the population is heterogeneous, which one of the following probability sampling methods is more appropriate?

A. Sequential sampling

B. Quota sampling

C. Double sampling

D. Stratified sampling

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23.
Range limit can be expressed as

A. R = L + S

B. R = L + S/2

C. R = L - S

D. None of these

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24.
The product moment coefficient correlation (r) is obtained by

A. ΣXY/xy

B. Σxy/N.σ_x.σ_y

C. ΣXY/N.σ_y

D. ΣXΣY/σ_x.σ_y

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25.
⁵C₂ is equal to-

A. 20

B. 10

C. 30

D. 100

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26.
The source of data are

A. Only primary

B. Only secondary

C. Primary and secondary

D. None of these

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27.
The sample mean is a:

A. Parameter

B. Statistic

C. Variable

D. Constant

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28.
Number of peoplewatching TV at a given point of time is an example of

A. finite population

B. infinite population

C. defined population

D. None of these

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29.
If correlation coefficient between two variables is uncertain, it implies that

A. r = +1

B. r = -1

C. r = 0

D. r = 0.5

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30.
Which of the following is not an attribute under statistical analysis?

A. Deafness

B. Beauty

C. Height

D. Blindness

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Business Statistics and Research Methods MCQ Questions and Solutions with Explanations | Commerce

21. Arithmetic mean of a group of 100 items is 50 and of another group of 150 items is 100. What will be the mean of all items?

Answer & Solution

22. If the population is heterogeneous, which one of the following probability sampling methods is more appropriate?

Answer & Solution

23. Range limit can be expressed as

Answer & Solution

24. The product moment coefficient correlation (r) is obtained by

Answer & Solution

25. 5C2 is equal to-

Answer & Solution

26. The source of data are

Answer & Solution

27. The sample mean is a:

Answer & Solution

28. Number of peoplewatching TV at a given point of time is an example of

Answer & Solution

29. If correlation coefficient between two variables is uncertain, it implies that

Answer & Solution

30. Which of the following is not an attribute under statistical analysis?

Answer & Solution

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21.
Arithmetic mean of a group of 100 items is 50 and of another group of 150 items is 100. What will be the mean of all items?

22.
If the population is heterogeneous, which one of the following probability sampling methods is more appropriate?

23.
Range limit can be expressed as

24.
The product moment coefficient correlation (r) is obtained by

25.
⁵C₂ is equal to-

26.
The source of data are

27.
The sample mean is a:

28.
Number of peoplewatching TV at a given point of time is an example of

29.
If correlation coefficient between two variables is uncertain, it implies that

30.
Which of the following is not an attribute under statistical analysis?