Advertisements
Advertisements
Question
The range of the data 8, 8, 8, 8, 8 ........ 8 is
Options
0
1
8
3
Solution
0
Explanation;
Hint:
R = L – S
= 8 – 8
= 0
APPEARS IN
RELATED QUESTIONS
Find the range and coefficient of range of the following data
63, 89, 98, 125, 79, 108, 117, 68
Calculate the range of the following data.
Income | 400 − 450 | 450 − 500 | 500 − 550 | 550 − 600 | 600 − 650 |
Number of workers | 8 | 12 | 30 | 21 | 6 |
A teacher asked the students to complete 60 pages of a record notebook. Eight students have completed only 32, 35, 37, 30, 33, 36, 35 and 37 pages. Find the standard deviation of the pages yet to be completed by them.
Find the variance and standard deviation of the wages of 9 workers given below:
₹ 310, ₹ 290, ₹ 320, ₹ 280, ₹ 300, ₹ 290, ₹ 320, ₹ 310, ₹ 280
The measurements of the diameters (in cms) of the plates prepared in a factory are given below. Find the standard deviation
Diameter (cm) | 21 − 24 | 25 − 28 | 29 − 32 | 33 − 36 | 37 − 40 | 41 − 44 |
Number of plates | 15 | 18 | 20 | 16 | 8 | 7 |
For a group of 100 candidates, the mean and standard deviation of their marks were found to be 60 and 15 respectively. Later on, it was found that the scores 45 and 72 were wrongly entered as 40 and 27. Find the correct mean and standard deviation
The mean of 100 observations is 40 and their standard deviation is 3. The sum of squares of all deviations is
If the standard deviation of x, y, z is p then the standard deviation of 3x + 5, 3y + 5, 3z + 5 is
The mean of the following frequency distribution is 62.8 and the sum of all frequencies is 50. Compute the missing frequencies f1 and f2.
Class Interval | 0 − 20 | 20 − 40 | 40 − 60 | 60 − 80 | 80 − 100 | 100 − 120 |
Frequency | 5 | f1 | 10 | f2 | 7 | 8 |
If for a distribution, `sum(x - 5)` = 3, `sum(x - 5)^2` = 43, and total number of observations is 18, find the mean and standard deviation