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प्रश्न
Explain the meaning of the term Variable.
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उत्तर
Variable: Any character that can vary from one individual to another is called variable
or variable
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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 meaning of the term Class-size.
Explain the meaning of the term True class limits.
Find the mean, median and mode of the following data:
| Marks obtained | 25 - 35 | 35 – 45 | 45 – 55 | 55 – 65 | 65 – 75 | 75 - 85 |
| No. of students | 7 | 31 | 33 | 17 | 11 | 1 |
In a class test, 50 students obtained marks as follows:
| Marks obtained | 0 – 20 | 20 – 40 | 40 – 60 | 60 – 80 | 80 – 100 |
| Number of Students | 4 | 6 | 25 | 10 | 5 |
In a class test, 50 students obtained marks as follows:
The distribution X and Y with total number of observations 36 and 64, and mean 4 and 3 respectively are combined. What is the mean of the resulting distribution X + Y?
Can the experimental probability of an event be greater than 1? Justify your answer.
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:
