McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Cost Accounting .
| 51. |
If cov (x, y) = 0.6, 𝝈𝒙 ൌ 𝟐, 𝝈𝒚 ൌ 𝟏, then rxy is |
| A. | 0.1 |
| B. | 0.3 |
| C. | 0.2 |
| D. | 0 |
| Answer» A. 0.1 | |
| 52. |
The value of the correlation coefficient lies between |
| A. | 0 and 1 |
| B. | - 1 and 1 |
| C. | -1 and 0 |
| D. | - 0.5 and 0.5 |
| Answer» B. - 1 and 1 | |
| 53. |
For two mutually exclusive events A and B, if P(A) = 0.4 and P(B) = 0.3, then P (A or B) is |
| A. | 0.6 |
| B. | 0.58 |
| C. | 0.7 |
| D. | 0.75 |
| Answer» C. 0.7 | |
| 54. |
If the Harmonic Mean of 2, a, 8 be 24/7, the value of a is 17 |
| A. | 4 |
| B. | 6 |
| C. | 12 |
| D. | 9 |
| Answer» A. 4 | |
| 55. |
The variance of first 5 natural numbers is |
| A. | 3 |
| B. | 4 |
| C. | 8 |
| D. | 2 |
| Answer» D. 2 | |
| 56. |
Two variables x and y are given by the relation y = 3x – 2. If the mode of x be 5, the mode of y will be |
| A. | 13 |
| B. | 10 |
| C. | 15 |
| D. | 9 |
| Answer» A. 13 | |
| 57. |
If for a symmetrical distribution 1st and 3rd quartiles are respectively 16 and 22, then the Median of the distribution is |
| A. | 20 |
| B. | 18 |
| C. | 24 |
| D. | 19 |
| Answer» D. 19 | |
| 58. |
If Mean = 50 cm and C.V. = 60%, then the S.D. is |
| A. | 25 cm |
| B. | 30 cm |
| C. | 28 cm |
| D. | 20 cm |
| Answer» B. 30 cm | |
| 59. |
For a given frequency distribution C.V = 30%, variance = 36 and Pearson’s Coefficient of Skewness = - 0.25, the mode of the distribution is |
| A. | 24 |
| B. | 20 |
| C. | 21.5 |
| D. | 24.5 |
| Answer» C. 21.5 | |
| 60. |
The regression equation of y on x is 3x – 5y = - 12 and regression equation of x on y is 2x – y = 7. The value of y when x = 10 is |
| A. | 8.4 |
| B. | 6.5 |
| C. | 7 |
| D. | 9 |
| Answer» A. 8.4 | |
| 61. |
If y = 3x + 30 and mean of x is 20, then the mean of y is |
| A. | 90 |
| B. | 80 |
| C. | 70 |
| D. | 100 |
| Answer» A. 90 | |
| 62. |
If the events A and B are mutually exclusive then |
| A. | P (A + B) = P (A) + P (B) |
| B. | P (A + B) = P (A) – P (B) |
| C. | P (A + B) = P (A) P (B) |
| D. | P (A + B) = 0 18 |
| Answer» A. P (A + B) = P (A) + P (B) | |
| 63. |
If 𝝈𝒙 ൌ 𝟏𝟎, 𝝈𝒚 ൌ 𝟏𝟐, and bxy = - 0.8, then the value of correlation coefficient (r) is |
| A. | - 0.84 |
| B. | - 0.96 |
| C. | - 0.75 |
| D. | 0.86 |
| Answer» B. - 0.96 | |
| 64. |
When Var (x) = 2.25, Var (y) = 1 and Cov (x, y) = 0.9, then correlation coefficient is |
| A. | 0.45 |
| B. | 0.8 |
| C. | 0.6 |
| D. | 0.75 |
| Answer» C. 0.6 | |
| 65. |
If the odds against an event 3:5, the probability of that event is |
| A. | 3/8 |
| B. | 5/8 |
| C. | 2/3 |
| D. | 1/3 |
| Answer» B. 5/8 | |
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