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प्रश्न
Can the experimental probability of an event be a negative number? If not, why?
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उत्तर
No, since the number of trials in which the event can happen cannot be negative and the total number of trials is always positive.
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संबंधित प्रश्न
What is primary data?
Explain the meaning of the term Class-size.
Explain the meaning of the term Frequency.
Explain the meaning of the term True class limits.
Explain the difference between a frequency distribution and a cumulative frequency distribution.
The median of 19 observations is 30. Two more observations are made and the values of these are 8 and 32. Find the median of the 21 observations taken together.
| HINT | Since 8 is less than 30 and 32 is more than 30, so the value of median (middle value) remains unchanged. |
Find the class marks of classes 10−25 and 35−55.
Explain the meaning of the following terms: Variate
The times, in seconds, taken by 150 athletes to run a 110 m hurdle race are tabulated below:
| Class | 13.8 – 14 | 14 – 14.2 | 14.2 – 14.4 | 14.4 – 14.6 | 14.6 – 14.8 | 14.8 – 15.0 |
| Frequency | 2 | 4 | 5 | 71 | 48 | 20 |
The number of athletes who completed the race in less than 14.6 seconds is:
The times, in seconds, taken by 150 athletes to run a 110 m hurdle race are tabulated below:
| Class | Frequency |
| 13.8 - 14 | 3 |
| 14 - 14.2 | 4 |
| 14.2 - 14.4 | 6 |
| 14.4 - 14.6 | 69 |
| 14.6 - 14.8 | 48 |
| 14.8 - 15.0 | 20 |
The number of athletes who completed the race in less than 14.6 seconds is?
