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प्रश्न
Can the experimental probability of an event be greater than 1? Justify your answer.
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उत्तर
No, since the number of trials in which the event can happen cannot be greater than the total number of trials.
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संबंधित प्रश्न
Describe some fundamental characteristics of statistics.
What is primary data?
Which of the two – the primary or the secondary data – is more reliable and why?
Explain the difference between a frequency distribution and a cumulative frequency distribution.
While calculating the mean of a given data by the assumed-mean method, the following values were obtained.
`A = 25, sum f_i d_i = 110, sum f_i = 50`.
Find the mean.
In a frequency distribution table with 12 classes, the class-width is 2.5 and the lowest class boundary is 8.1, then what is the upper class boundary of the highest class?
The daily income of a sample of 50 employees are tabulated as follows:
| Income (in Rs.): | 1-1200 | 201 -400 | 401-600 | 601 - 800 |
| No.of employees : | 14 | 15 | 14 | 7 |
Find the mean daily income of employees.
The monthly income of 100 families are given as below :
| Income in ( in ₹) | Number of families |
| 0-5000 | 8 |
| 5000-10000 | 26 |
| 10000-15000 | 41 |
| 15000-20000 | 16 |
| 20000-25000 | 3 |
| 25000-30000 | 3 |
| 30000-35000 | 2 |
| 35000-40000 | 1 |
Calculate the modal income.
Explain the meaning of the following terms: Frequency
The time, in seconds, taken by 150 athletes to run a 100 m hurdle race are tabulated below:
| Time (sec.) | 13 – 14 | 14 – 15 | 15 – 16 | 16 – 17 | 17 – 18 | 18 – 19 |
| Number of Athletes | 2 | 4 | 5 | 71 | 48 | 20 |
The number of athletes who completed the race in less than 17 seconds is:
