Aptitude - Statistics

page 1 out of 3

Question 1

If the average of first 'n' numbers in the series 148, 146,144,.................., 125 then n is:

Question 2

In a data the number i is repeated i times for i = 1, 2, 3, 4,........., then the mean of the data is:

Question 3

The mean of 10 observations is 16.3. By an error one observation is registered as 32 instead of 23. Then the correct mean is:

Question 4

Mean of 100 items is 49. It was discovered that three items would have been 60, 70, 80 were wrongly read as 40, 20, 50 respectively. The correct mean is:

Question 5

The mean weight of 9 items is 15. If one more item is added to the series now the mean becomes 16. The value of 10th item is:

Question 6

Consider the frequency distribution table:

 value 1 2 3 4 frequency 5 4 6 f

If the mean is known to be 3, then the value of f is :

Question 7

The mean of n items is x̄. If the first item is increased by 1, the second item is increased by 2 and so on, then the new mean is:

Question 8

The median of 5, 19, 14, 8, 6, 9, 12, 13, 21 is

Question 9

Median of x/5, x, x/4, x/2, x/3 is 8. If x>0 then value of x is

Question 10

Mode of the data 3, 2, 5, 2, 3, 5, 6, 6, 5, 3, 5, 2, 5 is

page 1 out of 3

Oops!!

To view the solution need to Login

Score : 0 / 0
L
o
a
d
i
n
g
.
.
.