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प्रश्न
Find the mean of the first five whole numbers.
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उत्तर
First five whole numbers are 0, 1, 2, 3 and 4.
Mean = `(0 + 1 + 2 + 3 + 4)/5`
= `10/5`
= 2
Therefore, the mean of first five whole numbers is 2.
संबंधित प्रश्न
The mean of 5 observations is 50. One of the observations was removed from the data, hence the mean became 45. Find the observation which was removed.
The number of members in the 40 families in Bhilar are as follows:
1, 6, 5, 4, 3, 2, 7, 2, 3, 4, 5, 6, 4, 6, 2, 3, 2, 1, 4, 5, 6, 7, 3, 4, 5, 2, 4, 3, 2, 3, 5, 5, 4, 6, 2, 3, 5, 6, 4, 2. Prepare a frequency table and find the mean of members of 40 families.
The following table shows the electricity (in units) used by 25 families of Eklara village in a month of May. Complete the table and answer the following questions.
| Electricity used (units) `bb(x_i)` |
No. of Families (frequency) `bb(f_i)` |
`bb(f_ix_i)` |
| 30 | 7 | _________ |
| 45 | 2 | __________ |
| 60 | 8 | __________ |
| 75 | 5 | __________ |
| 90 | 3 | __________ |
| N = _________ | `sum f_ix_i` = ______ |
- How many families use 45 units electricity?
- State the score, the frequency of which is 5.
- Find N, and `sum f_ix_i`
- Find the mean of electricity used by each family in the month of May.
Find the common difference of the A.P 3, 5, 7, ..........
Find the mean of first 10 prime numbers and first 10 composite numbers
Let x, y, z be three observations. The mean of these observations is ______.
The mean of a data is defined as ______.
Mean of the observations can be lesser than each of the observations.
Mean can never be a fraction.
The marks in a subject for 12 students are as follows:
31, 37, 35, 38, 42, 23, 17, 18, 35, 25, 35, 29
For the given data, find the mean
