Making Comparison Based on Average

Q.

Look at the comparison given below :

Marks of student 1 : 76 , 80 , 78 and 86

Marks of student 2 : 84 , 90 , 64 and 72

Marks of student 3 : 70 , 80 , 60 and 90

Whose average mark is the highest ?

1. Student 2
2. Student 1
3. Both Student 1 and 2
4. Student 3

Q.

Following table shows the points of each player scored in four games:

$\begin{array}{ccccc}\text{Player}& \text{Game}& \text{Game}& \text{Game}& \text{Game}\\ & 1& 2& 3& 4\\ \text{Suraj}& 10& 16& 14& 10\\ \text{Abhijit}& 8& 0& 4& 6\\ \text{Harshith}& 13& \text{Did not}& 11& 8\\ & & \text{Play}& & \end{array}$

Based on the above table answer the following questions:

(i) Find the mean to determine Suraj's average number of points scored per game.

(ii) To find the mean number of points per game of Harshith, would you divide the total points by 3 or by 4? Why?

(iii) Abhijit played in all the four games. How would you find the mean?

(iv) Who is the best performer? [4 MARKS]

Q.

Look at the comparison given below :

Marks of student 1 : 76 , 80 , 78 and 86

Marks of student 2 : 84 , 90 , 64 and 72

Marks of student 3 : 70 , 80 , 60 and 90

Whose average mark is the highest ?

Q. What is the difference between the average number of women and the average number of men?

Q. What are the average marks obtained by the student in all the periodical exams during the last session ?

1. 373
2. 379
3. 381
4. 385

Q.

What is the difference between the average number of women and the average number of men?

1. 6.33
2. 5.67
3. 6
4. 4.67

Q.

What is the total age of 4 people if their average age is 55?

1. 210

2. 220

3. 200

4. 250

Q.

The following observations have been arranged in ascending order.If the median of the data is 63, find the value of x:

29, 32, 48, 50, x, x+2, 72, 78, 84, 95

1. 64

2. 57

3. 63

4. 62

Q.

The mean of 200 items was 50. Later on, it was discovered that the two items were misread as 92 and 8 instead of 192 and 88. Find the correct mean.

1. 51

2. 50

3. 50.9

4. 48.8

Q.

The mean of 100 observation was found to be 30. If two observation were wrongly taken as 25 and 13 instead of 24 and 12 , find the correct mean

1. 39.98

2. 29.98

3. 35.23

4. 30

Q. The mean height of $12$ men is $1.70m$, and the mean height of $8$ women is $1.60m$. Find:the total height of the $12$ menthe total height of the $8$ womenthe mean height of the $20$ men and women.