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प्रश्न
Define cumulative frequency distribution.
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उत्तर
Cumulative frequency distribution: A table which displays the manner in which cumulative frequencies are distributed over various classes is called a cumulative frequencies (or)
cumulative frequencies distribution table.
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संबंधित प्रश्न
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 Class-mark.
Explain the difference between a frequency distribution and a cumulative frequency distribution.
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?
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.
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.
Find the range of given data: 46, 35, 78, 90, 20, 56, 45, 76.
The monthly pocket money of ten friends is given below:
₹ 80, ₹ 65, ₹ 35, ₹ 65, ₹ 50, ₹ 30, ₹ 60, ₹ 35, ₹ 65, ₹ 30
What is the lowest pocket money?
The Empirical relation between the three measures of central tendency is ______.
