Advertisements
Advertisements
Question
Mean can never be a fraction.
Options
True
False
Solution
This statement is False.
Explanation:
e.g. Mean between `1/4` and `1/6`
= `("Sum of" 1/4 and 1/6)/n` ......[∵ n(number of terms) = 2]
= `((6 + 4)/24)/2`
= `10/24 xx 1/2`
= `5/24`
APPEARS IN
RELATED QUESTIONS
The data 6, 4, 3, 8, 9, 12, 13, 9 has mean 9.
The mean of 35 observations is 20, out of which mean of first 18 observations is 15 and mean of last 18 observation is 25. Find the 18th observation.
Mean of 100 observations is 40. The 9th observation is 30. If this is replaced by 70 keeping all other observations same, find the new mean.
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.
The average of two numbers are 20. One number is 24, another number is ____________
Find the mean and mode of 6, 11, 13, 12, 4, 2
The mean of a data is defined as ______.
Mean of the data is always from the given data.
Calculate the Mean, Median and Mode of the following data:
5, 10, 10, 12, 13.
Are these three equal ?
The following are weights (in kg) of 12 people. 70, 62, 54, 57, 62, 84, 75, 59, 62, 65, 78, 60. Find the mean of the weights of the people.