Advertisements
Advertisements
प्रश्न
Find the mean and the median of: 0.5, 5.6, 3.8, 4.9, 2.7 and 4.4
उत्तर
Arranging in ascending order, we get
0.5, 2.7, 3.8, 4.4, 4.9, 5.6
Here, number of terms(n) = 6 which is even
∴ Median =`1/2 {"n"/2 "th term" + ("n"/2 + 1)"th term"}`
`= 1/2 {6/2 "th term" + (6/2 + 1) "th term"}`
`= 1/2 {3 "th term" + 4 "th term"}`
`= 1/2 {3.8 + 4.4}`
`= 1/2 xx 8.2 = 4.1`
∴ Median = 4.1
Mean = `"Sum of observations"/"Number of observations"`
`= (0.5 + 2.7 + 3.8 + 4.4 + 4.9 + 5.6)/6`
`= 21.9/6 = 3.65`
APPEARS IN
संबंधित प्रश्न
The mean of the following distribution is 62.8 and the sum of all the frequencies is 50. Find the missing frequencies f1 and f2.
| Class | 0 – 20 | 20 – 40 | 40 – 60 | 60 – 80 | 80 – 100 | 100 – 120 |
| Frequency | 5 | f1 | 10 | f2 | 7 | 8 |
At a shooting competition the score of a competitor were as given below:
| Score | 0 | 1 | 2 | 3 | 4 | 5 |
| No. of shots | 0 | 3 | 6 | 4 | 7 | 5 |
- What was his modal score?
- What was his median score?
- What was his total score?
- What was his mean score?
Q 11
Find the mean of all odd numbers from 5 to 20. Find the new mean when each number is multiplied by 4.
Find the mean of the first six multiples of 5.
The rainfall (in mm) in a city on 7 days of a certain week is recorded as follows:
| Day: | Mon | Tue | Wed | Thus | Fri | Sat | Sun |
| Rainfall (in mm): | 0.5 | 2.7 | 2.6 | 0.5 | 2 | 5.8 | 1.5 |
Find the total and average (mean) rainfall for the week.
Find the median of 9, 3, 20, 13, 0, 7 and 10
Find the median of 25, 16, 15, 10, 8, 30
Which of the following has the same mean, median and mode?
The median of any data lies between the ______ and ______ observations.
