Business Statistics 41. The measures used to calculate the variation present among the observations relative to their average is called:
Coefficient of kurtosis Absolute measures of dispersion Quartile deviation Relative measures of dispersion View answer Correct answer: (D) Relative measures of dispersion
42. If there are many extreme scores on all examination, the dispersion is:
Large Small Normal Symmetric View answer Correct answer: (A) Large
43. In quality control of manufactured items, the most common measure of dispersion is:
Range Average deviation Standard deviation Quartile deviation View answer Correct answer: (A) Range
44. If Y = aX ± b, where a and b are any two numbers and a ∦ 0, then the range of Y values will be:
Range(X) a range(X) + b a range(X) - b ∣a∣ range(X) View answer Correct answer: (D) ∣a∣ range(X)
45. Which measure of dispersion can be computed in case of open-end classes?
Standard deviation Range Quartile deviation Coefficient of variation View answer Correct answer: (C) Quartile deviation
46. If Y = aX ± b, where a and b are any two numbers but a ∦ 0, then M.D(Y) is equal to:
M.D(X) M.D(X) ± b ∣a∣ M.D(X) M.D(Y) + M.D(X) View answer Correct answer: (C) ∣a∣ M.D(X)
47. If the dispersion is small, the standard deviation is:
Large Zero Small Negative View answer Correct answer: (C) Small
48. The standard deviation one distribution dividedly the mean of the distribution and expressing in percentage is called:
Coefficient of Standard deviation Coefficient of skewness Coefficient of quartile deviation Coefficient of variation View answer Correct answer: (D) Coefficient of variation
49. If Y = aX + b, where a and b are any two numbers but a ∦ 0, then S.D(Y) is equal to:
S.D(X) a S.D(X) ∣a∣ S.D(X) a S.D(X) + b View answer Correct answer: (C) ∣a∣ S.D(X)
50. Standard deviation is always calculated from:
Mean Median Mode Lower quartile View answer Correct answer: (A) Mean