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प्रश्न
Find the mean of the first six multiples of 5.
उत्तर
Six multiples of 5 are 5, 10, 15, 20, 25 and 30
∴ Mean =`(5+10+15+20+25+30)/6` ....................(Here n = 6)
= `105/6=17.5`
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संबंधित प्रश्न
The mean of the following distribution is 52 and the frequency of class interval 30-40 is ‘f’. Find ‘f’.
| Class Interval | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 |
| Frequency | 5 | 3 | f | 7 | 2 | 6 | 13 |
Q 11
What is the median of 7, 10, 7, 5, 9, 10?
Find the mean of the following frequency distribution :
| Class | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 | 60-70 |
| Frequency | 4 | 4 | 7 | 10 | 12 | 8 | 5 |
Find the mode of the following:
3, 4, 5, 7, 6, 3, 5, 4, 3, 5, 6, 4, 7, 5, 4, 5, 4, 3, 4, 5, 7, 6, 5, 6, 6, 7
Find the median of the following frequency distribution :
| Weight(kg) | 36 | 38 | 40 | 42 | 44 |
| No. of students | 11 | 26 | 29 | 24 | 10 |
Find the median of:
241, 243, 347, 350, 327, 299, 261, 292, 271, 258 and 257
Out of 10 students, who appeared in a test, three secured less than 30 marks and 3 secured more than 75 marks. The marks secured by the remaining 4 students are 35, 48, 66 and 40. Find the median score of the whole group.
Find the median of 26, 33, 41, 18, 30, 22, 36, 45 and 24
Find the mean and the median of: 0.5, 5.6, 3.8, 4.9, 2.7 and 4.4
