31). Find the standard deviation for the given data.
The weight odf 5 boys (in kg.) are given below:
45, 40, 36, 34, 65
| A). 13.25 |
| B). 11.15 |
| C). 14.35 |
| D). 12.25 |
|
32). When dice is thrown, find the probability to get the sum of the numbers is 5.
| A). \( \Large \frac{1}{4} \) |
| B). \( \Large \frac{1}{3} \) |
| C). \( \Large \frac{1}{2} \) |
| D). \( \Large \frac{1}{5} \) |
|
33). When three coins are tossed. Find the probability to get at most one head.
| A). \( \Large \frac{2}{8} \) |
| B). \( \Large \frac{5}{8} \) |
| C). \( \Large \frac{7}{8} \) |
| D). \( \Large \frac{3}{8} \) |
|
34). Find the arithmetic mean for the given data: The marks scored by 6 boys are: 72, 58, 42, 64, 38, 44
| A). 53 |
| B). 42 |
| C). 46 |
| D). 64 |
|
35). Find the range for the following: 6, 7, 9, 12, 24, 18, 26, 4
| A). 24 |
| B). 16 |
| C). 22 |
| D). None of these |
|
36). Find the median for the following: 36, 23, 16, 19, 22, 18, 14
| A). 16 |
| B). 18 |
| C). 22 |
| D). 19 |
|
37). Find the median for the following: 64, 66, 72, 76, 84, 78
| A). 74 |
| B). 64 |
| C). 66 |
| D). 76 |
|
38). Calculate the mean for the following distribution.
| x: | 55 | 65 | 75 | 85 | 95 | 105 | | f: | 8 | 10 | 15 | 12 | 8 | 7 |
| A). 76.66 |
| B). 78.66 |
| C). 79.66 |
| D). 80.66 |
|
39). Calculate the mean for the following frequency distribution:
| x: | 10-20 | 20-40 | 30-40 | 40-50 | 50-60 | | f: | 16 | 7 | 8 | 10 | 9 |
| A). 32.8 |
| B). 42.6 |
| C). 52.8 |
| D). 44.6 |
|
40). Find the standard deviation for the following data: 10, 20, 30, 40, 50
| A). 38.28 |
| B). 14.14 |
| C). 6.14 |
| D). 10.14 |
|
