Time Left - 06:00 mins
Attempt now to get your rank among 131 students!
Question 1
The mean of 7 observations is 7. If each observation is increased by 2, then the new mean is
Question 2
Direction: Consider the fallowing for the next three (03) questions that follow :
In a frequency distribution having class intervals 0 – 10, 10 – 20, 20 – 30 and 30 – 40, the respective frequencies are x, x + 8, x – 2 and x – 4 and the arithmetic mean of the distribution is 17.8.
The value of x is
Question 3
Direction: Consider the fallowing for the next three (03) questions that follow :
In a frequency distribution having class intervals 0 – 10, 10 – 20, 20 – 30 and 30 – 40, the respective frequencies are x, x + 8, x – 2 and x – 4 and the arithmetic mean of the distribution is 17.8.
The median lies in which one of the following class intervals?
Question 4
Direction: Consider the fallowing for the next three (03) questions that follow :
In a frequency distribution having class intervals 0 – 10, 10 – 20, 20 – 30 and 30 – 40, the respective frequencies are x, x + 8, x – 2 and x – 4 and the arithmetic mean of the distribution is 17.8.
The modal class is
Question 5
Find standard deviation of data given by 22,25,28,30,35
- 131 attempts
- 0 upvotes
- 0 comments
Jul 11CDS & Defence
