Advertisements
Advertisements
प्रश्न
Find the mean of first six multiples of 4.
Advertisements
उत्तर
First six multiples of 4 are 4, 8, 12, 16, 20, 24
Mean = `"Sum of all observations"/"Total number of observations"`
= `(4 + 8 + 12 + 16 + 20 + 24)/6`
= `84/6`
= 14
Hence, the mean of first six multiplies of 4 is 14.
APPEARS IN
संबंधित प्रश्न
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, ..........
In a research laboratory scientists treated 6 mice with lung cancer using natural medicine. Ten days later, they measured the volume of the tumor in each mouse and given the results in the table
| Mouse marking | 1 | 2 | 3 | 4 | 5 | 6 |
| Tumor Volume (mm3) | 145 | 148 | 142 | 141 | 139 | 140 |
Find the mean
The mean of a, b, c, d and e is 28. If the mean of a, c and e is 24, then mean of b and d is
If the mean of five observations x, x + 2, x + 4, x + 6, x + 8, is 11, then the mean of first three observations is
The marks of 14 students in a science test out of 50 are given below. 34, 23, 10, 45, 44, 47, 35, 37, 41, 30, 28, 32, 45, 39 Find the minimum mark obtained
The mean of first fifteen even numbers is ____________
Find the mean and mode of 6, 11, 13, 12, 4, 2
The mean of three numbers is 10. The mean of other four numbers is 12. Find the mean of all the numbers.
