Advertisements
Advertisements
प्रश्न
Find the mean of: first eight natural numbers
उत्तर
The first eight natural numbers are 1, 2, 3, 4, 5, 6, 7, 8
∴ Sum of these observations =1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 = 36
and, number of their observations = 8
∴ Required mean = `36/8 = 4.5`
APPEARS IN
संबंधित प्रश्न
The distribution given below shows the marks obtained by 25 students in an aptitude test. Find the mean, median and mode of the distribution.
| Marks obtained | 5 | 6 | 7 | 8 | 9 | 10 |
| No. of students | 3 | 9 | 6 | 4 | 2 | 1 |
Find the mean of the following set of numbers:
11, 14, 23, 26, 10, 12, 18 and 6
Find the mean of the natural numbers from 3 to 12.
A mathematics aptitude test of 50 students was recored as follows:
| Marks | No. of students |
| 50-60 | 4 |
| 60-70 | 8 |
| 70-80 | 14 |
| 80-90 | 19 |
| 90-100 | 5 |
Draw a histrogram for the above data using a graph paper and locate the mode.
The marks of 200 students in a test is given below :
| Marks% | 10-19 | 20-29 | 30-39 | 40-49 | 50-59 | 60-69 | 70-79 | 80-89 |
| No. of Students | 7 | 11 | 20 | 46 | 57 | 37 | 15 | 7 |
Draw an ogive and find the number of students who scored more than 35% marks
Find the mean of first ten odd natural numbers.
The mean of a certain number of observations is 32. Find the resulting mean, if the observation is, divided by 0.5
Find the mean of: 3, 1, 5, 4, 4 and 7
Height (in cm) of 7 boys of a locality are 144 cm, 155 cm, 168 cm, 163 cm, 167 cm, 151 cm and 158 cm. Find their mean height.
Median of the data may or may not be from the given data.
