Find the mean height of persons from the following data.
Height (cm) | Number of persons |
120 | 3 |
130 | 4 |
140 | 5 |
150 | 6 |
160 | 2 |
Given:
Height (cm) | Number of Persons |
120 | 3 |
130 | 4 |
140 | 5 |
150 | 6 |
160 | 2 |
Formula Used:
Solution:
Total height = 120×3 + 130×4 + 140×5 + 150×6 + 160×2 = 2800 cm
Total number of persons = 3 + 4 + 5 + 6 + 2 = 20
Mean height == 140.00 cm
The mean height of the persons is 140.00 cm.
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90 Mins English English100 Questions100 Marks90 Mins English English100 Questions100 Marks90 Mins EnglishThe mean marks of boys in a class is 52 and that of girls is 42. The mean marks of boys and girls combined is 50. The percentage of boys in the class is:
The mean of the probability distribution of the number obtained on throwing a die having 1 on three faces, 2 on two faces, and 5 on one face is:
What is the mean of the following distribution?
The arithmetic mean of the observations 28, 31, 40, 63, 57, 37, 34, 70 and 99 is:
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What is the mean of the following distribution?
Marks | 12 | 22 | 58 | 79 | 89 |
No. of Students | 98 | 74 | 17 | 28 | 44 |
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What is the mean of the following distribution?
Marks | 13 | 27 | 59 | 61 | 97 |
No. of Students | 95 | 57 | 80 | 98 | 73 |
The mode and median of a data set is 89.7 and 32, respectively. What is the mean of the data set? (Use empirical formula.)
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