Question
The variance of degenerate random variable is:
Solution
The correct answer is A
The average of six numbers is 8. When three new numbers are included in such a way that the first number is twice the second and second number is thri...
Average marks of 30 students is 76. Two new students with marks (y + 8) and (y - 12) join, and the average becomes 75. Find (y - 35).
Find the median of the following observation:
24, 28, 29, 21, 19, 18, 25, 27, 17, 20, 28, 30, 11, 13If the average of s number is r⁴ and the average r number is s⁴, then find the average of all r+ s numbers
There are three categories of jobs HR, CA and PA. The average salary of the student who got the job of HR and CA category is 20 lakhs per annum. The ave...
Deepak spends an average of Rs. 520 on Sundays and Rs. 340 on the remaining days. Find his average spending in a 30-day month starting with Sunday.
There are three distinct numbers ‘m’, ‘n’ and ‘o’. If, m = 210, (m + n) = 510 and (o – n) = 60, then find the average of m, n and o.
...- The average height of a group of 30 players was recorded as 168 cm. Later it was discovered that 172 was wrongly written as 182 and 160 was written as 150....
The average income of a group of 30 freelancers is Rs. 500. If 3 freelancers earning an average of Rs. 550 leave the group and 1 freelancer earning Rs. ...
A coder solved problems at an average of x problems per day for the first 25 days. In the next 5 days, they solved at an average of 64 problems per day,...
