MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Mathematics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Find the mean deviation from mean of the observations: a, a+d, …., (a+2nd). |
| A. | n(n + 1)d2/3 |
| B. | n(n + 1)d2/2 |
| C. | a + n(n + 1)d2/2 |
| D. | .a) n(n + 1)d2/3b) n(n + 1)d2/2c) a + n(n + 1)d2/2d) n(n + 1)d/(2n + 1) |
| Answer» E. | |
| 2. |
In a class there are 20 juniors, 15 seniors and 5 graduate students. If the junior averaged 65 in the midterm exam, the senior averaged 70 and the graduate students averaged 91, then what is the mean of the centre class approximately? |
| A. | 71 |
| B. | 74 |
| C. | 70 |
| D. | 72 |
| Answer» D. 72 | |
| 3. |
What is the geometric mean of 5,52, ….,5n? |
| A. | 5n/2 |
| B. | 5(n+1)/2 |
| C. | 5n(n+1)/2 |
| D. | 5n |
| Answer» C. 5n(n+1)/2 | |
| 4. |
Find the mean deviation about mean from the following data: |
| A. | 7.7 |
| B. | 15 |
| C. | 8.7 |
| D. | 6.2View Answer |
| Answer» B. 15 | |
| 5. |
The mean deviation of an ungrouped data is 150. If each observation is increased by 3.5%, then what is the new mean deviation? |
| A. | 153.5 |
| B. | 3.5 |
| C. | 155.25 |
| D. | 150 |
| Answer» D. 150 | |
| 6. |
What is the mean deviation from the mean for the following data? |
| A. | 0 |
| B. | 3 |
| C. | 1 |
| D. | ½View Answer |
| Answer» B. 3 | |
| 7. |
Find the mean deviation about the median of the scores of a batsman given below. |
| A. | 10 |
| B. | 10.5 |
| C. | 11 |
| D. | 9View Answer |
| Answer» C. 11 | |