McqMate
| 1. |
Any measure indicating the centre of a set of data, arranged in an increasing or decreasing order of magnitude, is called a measure of |
| A. | Skewness |
| B. | Symmetry |
| C. | Central tendency |
| D. | Dispersion |
| Answer» C. Central tendency | |
| 2. |
Scores that differ greatly from the measures of central tendency are called: |
| A. | Raw scores |
| B. | The best scores |
| C. | Extreme scores |
| D. | Z-scores |
| Answer» C. Extreme scores | |
| 3. |
The measure of central tendency listed below is: |
| A. | The raw score |
| B. | The mean |
| C. | The range |
| D. | Standard deviation |
| Answer» B. The mean | |
| 4. |
The total of all the observations divided by the number of observations is called: |
| A. | Arithmetic mean |
| B. | Geometric mean |
| C. | Median |
| D. | Harmonic mean |
| Answer» A. Arithmetic mean | |
| 5. |
While computing the arithmetic mean of a frequency distribution, the each value of a class is considered equal to: |
| A. | Class mark |
| B. | Lower limit |
| C. | Upper limit |
| D. | Lower class boundary |
| Answer» B. Lower limit | |
| 6. |
The sum of the squares fo the deviations about mean is: |
| A. | Zero |
| B. | Maximum |
| C. | Minimum |
| D. | All of the above |
| Answer» C. Minimum | |
| 7. |
For a certain distribution, if ∑(X -20) = 25, ∑(X- 25) =0, and ∑(X-35) = -25, then is equal to: |
| A. | 20 |
| B. | 25 |
| C. | -25 |
| D. | 35 |
| Answer» B. 25 | |
| 8. |
The sum of the squares of the deviations of the values of a variable is least when the deviations are measured from |
| A. | Harmonic mean |
| B. | Geometric mean |
| C. | Median |
| D. | Arithmetic mean |
| Answer» D. Arithmetic mean | |
| 9. |
If X1, X2, X3, ... Xn, be n observations having arithmetic mean and if Y =4X ± 2, then is equal to: |
| A. | 4X |
| B. | 4 |
| C. | 4 ± 2 |
| D. | 4 ± 2 |
| Answer» C. 4 ± 2 | |
| 10. |
If =100 and Y=2X – 200, then mean of Y values will be: |
| A. | 0 |
| B. | 2 |
| C. | 100 |
| D. | 200 |
| Answer» A. 0 | |
| 11. |
If the arithmetic mean of 20 values is 10, then sum of these 20 values is: |
| A. | 10 |
| B. | 20 |
| C. | 200 |
| D. | 20 + 10 |
| Answer» C. 200 | |
| 12. |
Ten families have an average of 2 boys. How many boys do they have together? |
| A. | 2 |
| B. | 10 |
| C. | 12 |
| D. | 20 |
| Answer» D. 20 | |
| 13. |
If the arithmetic mean of the two numbers X1 and X2 is 5 if X1=3, then X2 is: |
| A. | 3 |
| B. | 5 |
| C. | 7 |
| D. | 10 |
| Answer» C. 7 | |
| 14. |
We must arrange the data before calculating: |
| A. | Mean |
| B. | Median |
| C. | Mode |
| D. | Geometric mean |
| Answer» B. Median | |
| 15. |
The lower and upper quartiles of a symmetrical distribution are 40 and 60 respectively. The value of median is: |
| A. | 40 |
| B. | 50 |
| C. | 60 |
| D. | (60 – 40) / 2 |
| Answer» B. 50 | |
| 16. |
If in a discrete series 75% values are greater than 50, then: |
| A. | Q1 = 50 |
| B. | Q1 < 50 |
| C. | Q1 > 50 |
| D. | Q1 ≠ 50 |
| Answer» A. Q1 = 50 | |
| 17. |
Suitable average for averaging the shoe sizes for children is |
| A. | Mean |
| B. | Mode |
| C. | Median |
| D. | Geometric mean |
| Answer» B. Mode | |
| 18. |
A measurement that corresponds to largest frequency in a set of data is called: |
| A. | Mean |
| B. | Median |
| C. | Mode |
| D. | Percentile |
| Answer» C. Mode | |
| 19. |
Which of the following average cannot be calculated for the observations 2, 2, 4, 4, 6, 6, 8, 8, 10, 10 ? |
| A. | Mean |
| B. | Median |
| C. | Mode |
| D. | All of the above |
| Answer» C. Mode | |
| 20. |
What have been constructed from OR problems and methods for solving the models that are available in many cases? |
| A. | Scientific models |
| B. | Algorithms |
| C. | Mathematical models |
| D. | None of these |
| Answer» C. Mathematical models | |
| 21. |
Which of the following is not the phase of OR methodology? |
| A. | Formulating a proble |
| B. | Constructing a model |
| C. | Establishing controls |
| D. | Controlling the environment |
| Answer» D. Controlling the environment | |
| 22. |
Operations research is the application of methods to arrive at the optimal solutions to the problems. |
| A. | Economical |
| B. | Scientific |
| C. | Both A and B |
| D. | Artistic |
| Answer» B. Scientific | |
| 23. |
In operations research, the are prepared for situations. |
| A. | Mathematical models |
| B. | Physical models diagrammatic |
| C. | Diagrammatic models |
| D. | Both B and C |
| Answer» A. Mathematical models | |
| 24. |
OR can evaluate only the effects of . |
| A. | Personnel factors |
| B. | Financial factors |
| C. | Numeric and quantifiable factors |
| D. | Both A and B |
| Answer» C. Numeric and quantifiable factors | |
| 25. |
Which technique is used in finding a solution for optimizing a given objective, such as profit maximization or cost reduction under certain constraints? |
| A. | Qualing theory |
| B. | Waiting Line |
| C. | Both A and B |
| D. | Linear Programming |
| Answer» D. Linear Programming | |
| 26. |
By constructing models, the problems in libraries increase and cannot be solved. |
| A. | TRUE |
| B. | FALSE |
| Answer» B. FALSE | |
| 27. |
A solution can be extracted from a model either by |
| A. | Conducting experiments on it |
| B. | Mathematical analysis |
| C. | Both A and B |
| D. | Diversified Technique |
| Answer» C. Both A and B | |
| 28. |
The main limitation of operations research is that it often ignores the human element in the production process. |
| A. | TRUE |
| B. | FALSE |
| Answer» A. TRUE | |
| 29. |
Feasible solution satisfies |
| A. | Only constraints |
| B. | only non- negative |
| C. | Both A and B |
| D. | A, B and optimal solution |
| Answer» C. Both A and B | |
| 30. |
What is the objective function in linear programming problems? |
| A. | A constraint for available resource |
| B. | An objective for research and development of a company |
| C. | A linear function in an optimization problem |
| D. | A set of non- negativity conditions |
| Answer» C. A linear function in an optimization problem | |
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