Class Interval

Q.

$\begin{array}{cc}\text{Class Marks}& \text{Frequency}\\ 30& 2\\ 40& 5\\ 50& 14\\ 60& 21\\ 70& 23\\ 80& 8\\ 90& 7\\ 100& 1\end{array}$

Cumulative frequency for the class interval 85-95 is ?

1. Class size

2. Class interval

3. All of these

4. Class width

Q.

For discontinuous grouped data, the class interval is given in _______ form.

1. inclusive

2. exclusive

3. class-mark

4. frequency

Q. To construct a histogram, Ankita observed the range of observations. She decided to divide that range into a number of parts. Then she does following calculation:
Range/no. of parts.

What are the terms used to describe
a. number of parts
b. range/no. of parts

1. intervals, class width
2. class, band width
3. number of bars, width of bars
4. frequency, class interval

Q.

The ____________ of a class interval is the sum of the frequencies of all the classes upto this class interval

1. frequency

2. Cumulative Frequency

3. Less than

4. Ogive

Q.

The width of each of five continuous classes in a frequency distribution is 5 and the lower class limit of the lowest class is 10. The upper limit of the highest class is

1. 40
2. 15
3. 35
4. 25

Q.

If there are 5 people in the height range 170-175 cm in a class of 50 people, the percentage of people in the height range 170-175 cm is__________.

1. 5%

2. 10%

3. 15%

4. 20%

Q.

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

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

Q.

If there are 5 people in the height range 170-175 cm in a class of 50 people, the percentage of people in the height range 170-175 cm is__________.

1. 5%

2. 10%

3. 15%

4. 20%

Q.

In which of the following frequency distributions, the class intervals overlap?

1. Continuous frequency distribution
2. None of these
3. Discontinuous frequency distribution
4. Both, Continuous frequency distribution as well as Discontinuous frequency distribution

Q.

Look at the following table below.
$\begin{array}{cc}\text{Class interval}& \text{Class mark}\\ 0-5& --\\ 5-10& --\\ 10-15& \\ 15-20& \end{array}$

Fill in the blanks with the class marks of the corresponding class intervals.

1. 3, 8

2. 2.5, 7.5

3. 5, 10

4. 0, 5