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

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61.
The numerical value of the standard deviation can never be negative. The positive square root of the mean of the squares of the deviations of observations from their mean is called:

A. Variance

B. Range

C. Standard deviation

D. Coefficient of variation

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62.
Which of the statement(s) are true about 'measures of dispersion'?
1.The divergence of a set of observation
2. The concentration of a set of observation

A. Only 1

B. Only 2

C. Both 1 and 2

D. None of the above

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63.
Primary data collected through direct personal interview is suitable for:

A. Intensive study

B. Extensive study

C. Both for intensive and for extensive study

D. Suitable only when third parties called witness capable of supplying necessary information

E. When telephone is used for a series of question raised by the investigator

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64.
The first three moments of a distribution about the mean X are 1, 4 and 0. The distribution is:

A. Symmetrical

B. Skewed to the left

C. Skewed to the right

D. Normal

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65.
Mode is a positional average which is used to deal with which type of data?
1. Quantitative data
2. Qualitative data

A. Only 1

B. Only 2

C. Both 1 and 2

D. None of the above

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66.
Assertion (A) The two lines of regression can never be parallel.
Reason (R) The two lines of regression always pass through common point (x · y). Therefore, they can never be parallel.

A. Both (A) and (R) are true and (R) is the correct explanation of (A)

B. (A) is true, but (R) is false

C. (R) is true, but (A) is false

D. Both (A) and (R) are false

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67.
Statistical mean, which is not affected by extreme values

A. Median

B. Arithmetic mean

C. Harmonic mean

D. Geometric mean

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68.
The farther the two regression lines cut each other

A. the greater will be the degree of correlation

B. the lesser will be degree of correlation

C. does not really matter

D. None of them

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69.
Which of the following is correct in a negatively skewed distribution?

A. The arithmetic mean is greater than the mode

B. The arithmetic mean is greater than the median

C. (Q3 - Median) = (Median - Q1)

D. (Q3 - Median) < (Median - Q1)

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70.
Which of the following conditions need to be fulfilled for applicability of T- test?

A. The sample size is less than 30

B. The population standard deviation must be unknown

C. Both A and B

D. Neither A nor B

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

61. The numerical value of the standard deviation can never be negative. The positive square root of the mean of the squares of the deviations of observations from their mean is called:

Answer & Solution

62. Which of the statement(s) are true about 'measures of dispersion'? 1.The divergence of a set of observation 2. The concentration of a set of observation

Answer & Solution

63. Primary data collected through direct personal interview is suitable for:

Answer & Solution

64. The first three moments of a distribution about the mean X are 1, 4 and 0. The distribution is:

Answer & Solution

65. Mode is a positional average which is used to deal with which type of data? 1. Quantitative data 2. Qualitative data

Answer & Solution

66. Assertion (A) The two lines of regression can never be parallel. Reason (R) The two lines of regression always pass through common point (x · y). Therefore, they can never be parallel.

Answer & Solution

67. Statistical mean, which is not affected by extreme values

Answer & Solution

68. The farther the two regression lines cut each other

Answer & Solution

69. Which of the following is correct in a negatively skewed distribution?

Answer & Solution

70. Which of the following conditions need to be fulfilled for applicability of T- test?

Answer & Solution

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61.
The numerical value of the standard deviation can never be negative. The positive square root of the mean of the squares of the deviations of observations from their mean is called:

62.
Which of the statement(s) are true about 'measures of dispersion'?
1.The divergence of a set of observation
2. The concentration of a set of observation

63.
Primary data collected through direct personal interview is suitable for:

64.
The first three moments of a distribution about the mean X are 1, 4 and 0. The distribution is:

65.
Mode is a positional average which is used to deal with which type of data?
1. Quantitative data
2. Qualitative data

66.
Assertion (A) The two lines of regression can never be parallel.
Reason (R) The two lines of regression always pass through common point (x · y). Therefore, they can never be parallel.

67.
Statistical mean, which is not affected by extreme values

68.
The farther the two regression lines cut each other

69.
Which of the following is correct in a negatively skewed distribution?

70.
Which of the following conditions need to be fulfilled for applicability of T- test?