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MCQOPTIONS
This section includes 3246 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
The varience of 15 observations is 4, if each observation is increased by 9, thevarience of the resulting observation is |
| A. | 8 |
| B. | 16 |
| C. | 4 |
| D. | None of these |
| Answer» D. None of these | |
| 52. |
For a frequency distribution M.D from mean is completed by _____________ |
| A. | ∑x/n |
| B. | ∑fx/n |
| C. | ∑fIdI/n |
| D. | None of these |
| Answer» D. None of these | |
| 53. |
The forecarts on the bacis of a time series are |
| A. | Cent per unit time |
| B. | true to great extent |
| C. | Never true |
| D. | True to some extend |
| Answer» C. Never true | |
| 54. |
Find the value of x, if the mode of the data is 25. 15,20,25,18,14,15,25,15,18,16,20,25,20,x |
| A. | 20 |
| B. | 10 |
| C. | 25 |
| D. | None of these |
| Answer» D. None of these | |
| 55. |
A time series consists of |
| A. | two components |
| B. | three components |
| C. | four components |
| D. | none of the above |
| Answer» D. none of the above | |
| 56. |
Index numbers show ____________ changes rather than absolute changes. |
| A. | relative |
| B. | percentage |
| C. | both |
| D. | none |
| Answer» C. both | |
| 57. |
Method of least squares to fit in the trend is applicable only if the trend is____________ |
| A. | linex |
| B. | parabolic |
| C. | both a & b |
| D. | neither a nor c |
| Answer» D. neither a nor c | |
| 58. |
Mean deviation which is calculated is minimum at |
| A. | mean |
| B. | median |
| C. | c.mode |
| D. | d.all of these |
| Answer» C. c.mode | |
| 59. |
Index numbers are expressed: |
| A. | in percentages |
| B. | in ratios |
| C. | in terms of absolute value |
| D. | all the above |
| Answer» B. in ratios | |
| 60. |
The mean of a observation is x. If k is added to each observation then new mean is_______________ |
| A. | x |
| B. | x+k |
| C. | x-k |
| D. | kx |
| Answer» C. x-k | |
| 61. |
Find the range and the coefficient of range for the following values 25,32,85,32,42,10,20,18,28 |
| A. | 25 |
| B. | 85 |
| C. | 10 |
| D. | 75 |
| Answer» E. | |
| 62. |
If all the values of a series are multiplied by 5 what happens to the S.D |
| A. | Decreasing by 5 |
| B. | Increasing by 5 |
| C. | Multiplied by 5 |
| D. | None of these |
| Answer» D. None of these | |
| 63. |
The component of a time series attached to long term variations is termed as: |
| A. | cyclic variation |
| B. | secula |
| C. | irregular variation |
| D. | all the above |
| Answer» C. irregular variation | |
| 64. |
Maximum positive value of coefficient of correlation is ___________- |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | None of these |
| Answer» C. 2 | |
| 65. |
Index number is a ______________ |
| A. | measure of relative changes. |
| B. | a special type of an average. |
| C. | a percentage relative |
| D. | all the above |
| Answer» E. | |
| 66. |
Secular trend is indicative of long term variation towards |
| A. | increase only |
| B. | decrease only |
| C. | either increase or decrease |
| D. | none of the above |
| Answer» D. none of the above | |
| 67. |
The median of a series is 10. Two additional observations 8 and 15 are added to the series. The median of the new series will be ____________________ |
| A. | 8 |
| B. | 15 |
| C. | 11 |
| D. | 10 |
| Answer» E. | |
| 68. |
The mode of a frequency distribution can be determined graphically by |
| A. | Median |
| B. | Ogive |
| C. | Histogram |
| D. | None of these |
| Answer» D. None of these | |
| 69. |
If the index number is independent of the units of measurement ,then it satisfies |
| A. | time reversal test |
| B. | factor reversal test |
| C. | unit test |
| D. | all the above |
| Answer» D. all the above | |
| 70. |
seasonal variation means the variations occurring within |
| A. | a number of year |
| B. | parts of a year |
| C. | parts of a month |
| D. | none of the above |
| Answer» C. parts of a month | |
| 71. |
Statistical methods |
| A. | collection of data |
| B. | classification |
| C. | analysis and inter correlation of data |
| D. | all these |
| Answer» E. | |
| 72. |
Statistics deals with |
| A. | qualitative information |
| B. | quantitative information |
| C. | both |
| D. | none of these |
| Answer» C. both | |
| 73. |
If correlation coefficient r is –ve, both the regression coefficients are ____________ |
| A. | + ve |
| B. | 0 |
| C. | – ve |
| D. | None of these |
| Answer» D. None of these | |
| 74. |
The mean duration of the series : a,a+d,a+2d,………,a+2n from its mean is |
| A. | n(n-1) |
| B. | n(n-1)/2 |
| C. | n(n+1)/2 |
| D. | n(n+1)d/2n+1 |
| Answer» E. | |
| 75. |
Two types of ogives meet at ______________ |
| A. | Mode |
| B. | Mean |
| C. | Median |
| D. | None of these |
| Answer» D. None of these | |
| 76. |
The best average for constructing an index numbers is _________________ |
| A. | Arithmetic mean |
| B. | Harmonic mean |
| C. | Geometric mean |
| D. | weighted mean |
| Answer» D. weighted mean | |
| 77. |
Which of the following represents statistics |
| A. | a single value |
| B. | only two values in a set |
| C. | a group of values in a set |
| D. | none of these |
| Answer» D. none of these | |
| 78. |
Statistics is ________________ |
| A. | an art |
| B. | a science |
| C. | both |
| D. | none of these |
| Answer» D. none of these | |
| 79. |
Variance= _______________ |
| A. | S.D |
| B. | X |
| C. | C.V |
| D. | S.D2 |
| Answer» E. | |
| 80. |
Statistics is defined in terms of numerical data in the___________ |
| A. | singular sense |
| B. | plural sense |
| C. | either a or b |
| D. | both a and b |
| Answer» C. either a or b | |
| 81. |
Calculate median 35,23,45,50,80,61,92,40,52,61 |
| A. | 23 |
| B. | 50 |
| C. | 80 |
| D. | 51 |
| Answer» E. | |
| 82. |
The median of a frequency distribution is graphically with the help of ______________- |
| A. | Graph |
| B. | Ogive |
| C. | Mode |
| D. | None of these |
| Answer» C. Mode | |
| 83. |
Statistics is applied in ____________________ |
| A. | economics |
| B. | business management |
| C. | commerce and industry |
| D. | all the above |
| Answer» E. | |
| 84. |
A normal distribution is an approximation to .............................. |
| A. | binomial distribution |
| B. | poisson distribution |
| C. | poisson |
| D. | none of these |
| Answer» B. poisson distribution | |
| 85. |
Standard deviation of the sampling distribution is called ............................ |
| A. | probable error |
| B. | standard error |
| C. | mean deviation |
| D. | coefficient of variation |
| Answer» C. mean deviation | |
| 86. |
Theoretically, the range of normal curve is ................................................ |
| A. | -1 to +1 |
| B. | +1 to infinity |
| C. | –infinity to +infinity |
| D. | none of these |
| Answer» D. none of these | |
| 87. |
Mean ± 2 S.D. covers .............. % area of normal curve. |
| A. | 68.27 |
| B. | 95.45 |
| C. | 95.54 |
| D. | 98.73 |
| Answer» C. 95.54 | |
| 88. |
In a ......................... distribution, quartiles are equi-distant from median. |
| A. | binomial |
| B. | poisson |
| C. | normal |
| D. | none of these |
| Answer» D. none of these | |
| 89. |
A normal distribution requires two parameters, namely the mean and .............. |
| A. | median |
| B. | mode |
| C. | standard deviation± |
| D. | mean deviation |
| Answer» D. mean deviation | |
| 90. |
Mean Deviation (M.D) for normal distribution is equal to ...................... |
| A. | 5/4 s.d. |
| B. | 3/2 s.d. |
| C. | 4/5 s |
| Answer» D. | |
| 91. |
The area under the standard normal curve beyond the line z = ±1.96 is ............................... |
| A. | 5% |
| B. | 10% |
| C. | 90% |
| D. | 95% |
| Answer» B. 10% | |
| 92. |
Normal distribution is ................................ |
| A. | mesokurtic |
| B. | leptokurtic |
| C. | more than 0 |
| D. | in between +1 and -1 |
| Answer» B. leptokurtic | |
| 93. |
For a normal curve , the QD, MD, and SD are in the ratio of .............................. |
| A. | 5:8:10 |
| B. | 10:12:15 |
| C. | 2:3:5 |
| D. | none of these |
| Answer» C. 2:3:5 | |
| 94. |
An approximate relation between MD about mean and SD of a normal distribution is............................ |
| A. | 5md = 4 sd |
| B. | 3md = 3 sd |
| C. | 3md = 2 sd |
| D. | 4md = 5 sd |
| Answer» B. 3md = 3 sd | |
| 95. |
An approximate relation between QD and SD of normal distribution is ............... |
| A. | 2qd = 3sd |
| B. | 5qd = 4sd |
| C. | 4qd = 5sd |
| D. | 3qd = 2sd |
| Answer» E. | |
| 96. |
The normal curve is ................................. |
| A. | bi-model |
| B. | uni-model |
| C. | mean |
| D. | none of these |
| Answer» C. mean | |
| 97. |
Normal distribution is ...................... |
| A. | continuous |
| B. | unimodal |
| C. | normal |
| D. | none of these |
| Answer» E. | |
| 98. |
...........................distribution gives a normal bell shaped curve. |
| A. | normal |
| B. | poisson |
| C. | binomial |
| D. | none of these |
| Answer» B. poisson | |
| 99. |
Normal distribution is a........................... probability distribution. |
| A. | discrete |
| B. | continuous |
| C. | poisson |
| D. | none of these |
| Answer» C. poisson | |
| 100. |
Normal distribution was first discovered by ................................... in 1733 as limiting form ofbinomial distribution. |
| A. | karl pearson |
| B. | james bernoulli |
| C. | de-moivre |
| D. | simeon denis poisson |
| Answer» D. simeon denis poisson | |