Introduction to Average

Q.

The mean of 100 observations is 50. If in one of the observations 50 is replaced by 150, the resulting mean will be

1. 51

2. 50.5

3. 51.5

4. 52

Q.

The average goals scored by Ronaldo in a season of 36 matches is 1.5.

What is the total no. of goals scored by him in the entire season?

1. 50

2. 54

3. 60

4. 44

Q.

The mean of 5 observatons $x+3,x+5,x+7,x+9,x+11$ is 14. Find the value of x.

1. 5

2. 7

3. 8

4. 6

Q.

Find the mean of all factors of 10.

1. 3.5

2. 4

3. 4.5

4. 2.5

Q.

Find the total earnings for the month of July if the average daily income of Alex’s uncle is ₹ 800.

Q.

Average of the first 5 natural numbers is?

1. 2

2. 3

3. 2.5

4. 3.5

Q.

The mean of 5 numbers is 18. If one number is excluded, their mean is 16. The excluded number is:

1. 34

2. 16

3. 33

4. 26

Q.

Trade amounts for the following countries are :

India : $ 56 million

USA : $ 84 million

China : $ 120 million

Germany : $ 45 million

Canada : $ 70 million

What is the average trade done by these countries?

1. $ 75 million

2. $ 70 million

3. $ 85.5 million

4. $ 82 million

Q.

What is the average of a century and a millenium?

1. 500

2. 550

3. 700

4. 50

Q.

What is the Arithmetic mean of the given data :
45, 48 , 53 , 55 , 58 , 63 , 68 and 66

1. 55

2. 57

3. 60

4. 59