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प्रश्न
What is primary data?
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उत्तर
The word data means information statistical data and of two types
(i) Primary data, (ii) Secondary data
Primary data: when an investigator collects data himself with a definite plan or design in his (her) mind is called primary data
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संबंधित प्रश्न
Explain the meaning of the term Variable.
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 following table gives the daily income of 50 workers of a factory:
| Daily income (in Rs) | 100 – 120 | 120 – 140 | 140 – 160 | 160 – 180 | 180 – 200 |
| No. of workers | 12 | 14 | 8 | 6 | 10 |
Find the mean, median and mode of the above data.
Find the class marks of classes 10 -25 and 35 – 55.
Explain the meaning of the following terms: True Class Limits
Explain the meaning of the following terms: Frequency
As the number of tosses of a coin increases, the ratio of the number of heads to the total number of tosses will be `1/2`. Is it correct? If not, write the correct one.
The Empirical relation between the three measures of central tendency is ______.
