Business Statistics

Q 71. The coefficient of correlation between the regression coefficients is:

(A) Arithmetic Mean
(B) Geometric Mean
(C) Average
(D) none
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Q 72. The regression coefficients re independent of change of origin but:

(A) Not of Scale
(B) Also of Scale
(C) No Change in scale
(D) none
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Q 73. If one of the regression coefficient is greater than unity, the other must be:

(A) More than Unity
(B) Less than Unity
(C) Unity
(D) none
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Q 74. If the observations of a variable X are, -4, -20, -30, -44 and -36, then the value of the range will be:

(A) -48
(B) 40
(C) -40
(D) 48
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Q 75. The range of the scores 29, 3, 143, 27, 99 is:

(A) 140
(B) 143
(C) 146
(D) 70
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Q 76. In quality control of manufactured items, the most common measure of dispersion is:

(A) Range
(B) Average deviation
(C) Standard deviation
(D) Quartile deviation
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Q 77. The measure of dispersion which uses only two observations is called:

(A) Range
(B) Quartile deviation
(C) Mean deviation
(D) Standard deviation
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Q 78. The measure of dispersion which uses only two observations is called:

(A) Mean
(B) Median
(C) Range
(D) Coefficient of variation
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Q 79. Which of the following is an absolute measure of dispersion?

(A) Coefficient of variation
(B) Coefficient of dispersion
(C) Standard deviation
(D) Coefficient of skewness
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Q 80. Given below the four sets of observations. Which set has the minimum variation?

(A) 46, 48, 50, 52, 54
(B) 30, 40, 50, 60, 70
(C) 40, 50, 60, 70, 80
(D) 48, 49, 50, 51, 52
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