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प्रश्न
Explain the meaning of the term Class-mark.
उत्तर
Class mark: The middle value of the class is called as the class mark.
Class mark`="(Upper Limit + Lower Limit)"/2`
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संबंधित प्रश्न
What is primary data?
Explain the meaning of the term Class limits.
Explain the difference between a frequency distribution and a cumulative frequency distribution.
Find the mean, median and mode of the following data:
| Class | 0 – 10 | 10 – 20 | 20 – 30 | 30 – 40 | 40 – 50 | 50 – 60 | 60 – 70 |
| Frequency | 4 | 4 | 7 | 10 | 12 | 8 | 5 |
The median of 19 observations is 30. Two more observation 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.
Which of the following is not a measure of central tendency?
Define primary data and secondary data.
Class mark of a class is obtained by using ______.
Find the range of given data: 46, 35, 78, 90, 20, 56, 45, 76.
The Empirical relation between the three measures of central tendency is ______.
