Class Mark

Q.

Question 1
The class mark of class 90 - 120 is:

A) 90
B) 105
C) 115
D) 120

Q. The ___ of a class interval is called its class mark.

1. Lower limit
2. Upper limit
3. Mid - point
4. Width

Q.

What are the mid-points of the class-intervals called?

1. Class width

2. Class mark

3. Class interval

4. None of these

Q. Class mark of a particular class is 9.5, then upper limit + lower limit = _______.

1. 19

Q. Find antilog 0.3269 (use log table)

1. 2.122
2. 0.004
   
3. 2.118
4. 2.512

Q.

Assertion: We find midpoints of a class interval with the following formula.
$\frac{upperclasslimit+lowerclasslimit}{2}$

Reason: To draw frequency polygons independently without drawing histogram it is required to have the class mark.

Which of the following is correct?

1. Both A and R are true, but R is not the correct explanation of A

2. Both A and R are true and R is the correct explanation of A

3. A is true and R is false

4. A is false and R is true

Q. The following information is regarding marks in English, obtained out of 80.
Find the class mark for the class 60 - 80.

1. 60
2. 80
3. 75
4. 70

Q. Assertion: We find mid points of a class interval as upper as
$\frac{upperclasslimit+lowerclasslimit}{2}$
Reason: To draw frequency polygons independently without drawing histogram it is required to have class mark.
Which of the following is correct

1. Both A and R are true and R is not the correct explanation of A.
2. A is true and R is false.
3. A is false and R is true.
4. Both A and R are true and R is the correct explanation of A.

Q. What is the class mark of class 90-120?

1. 115
2. 105
3. 120
4. 90

Q.

The class mark of the class $90–120$ is:

1. $90$

2. $105$

3. $115$

4. $120$

Q. Class mark of a particular class is 9.5, then upper limit + lower limit = _______.

1. 19

Q. An orderly distribution of the raw data into certain specified categories is known as

1. Frequency
2. Frequency distribution
3. Cumulative frequency
4. Primary data

Q.

What are the mid-points of the class-intervals called?

1. Class mark

2. Class width

3. Class interval

4. None of these

Q.

Class mark of a particular class is 9.5 , then upper limit + lower limit = _________

1. 14

2. 19

3. 20

4. 18

Q. The class mark of class $160-190$ is:​

Q.

What are the mid-points of the class-intervals called?

1. Class interval

2. Class mark

3. None of these

4. Class width

Q. The upper limit of a class-interval is called class-mark.

1. True
2. False

Q.

What are the mid-points of the class-intervals called?

1. Class mark

2. Class width

3. None of these

4. Class interval

Q. Class mark of a particular class is 9.5 and the class size is 6, then the class interval is

1. 3.5 - 15.5
2. 12.5 - 18.5
3. 6.5 - 12.5
4. 15.5 - 27.5

Q. For the given class of 90-120, the class mark is ______ .

1. 115
2. 120
3. 90
4. 105

Q. In a frequency distribution, mid-point of a class is 10 and class width is 6. The lower limit of the class is:

1. 6
2. 12
3. 8
4. 7

Q. The class mark for the class interval 70 - 80 is .

1. 85
2. 75
3. 65