Frequency Table of Grouped Data (Exclusive Form)

Q.

The histogram gives the information about the number of literate males along with their age. Below the age of 30, how many males are literate?

1. 800
2. 1400
3. 1300
4. 1900

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.

Find the upper class - limit of the highest class.

1. 15

2. 40

3. 25

4. 35

Q.

Find the frequency of 40 in the following given set of data.

10, 40, 80, 100, 60, 40, 30, 40, 20, 40.

1. 1

2. 2

3. 3

4. 4

Q.

What is the lower class limit for the class interval 40 - 70?

1. 35

2. 45

3. 55

4. 40

Q.

If the classes in a grouped frequency distribution are not continuous, we can make them continuous by finding half of the difference between the upper limit of a class and the lower limit of the next class, and then adding the same to all the lower limits and subtracting it from all the upper limits in the distribution.

1. False

2. True

Q.

The marks obtained by 10 students in a mathematics test are
given here: 52, 46, 92, 78, 62, 44, 34, 46, 58, 52.
The presentation of data in the above manner is called ungrouped frequency table.

1. True

2. False

Q.

Given below are the heights of 20 students in centimetres. Find the number of students whose height is greater than 179 cm.

$$\begin{array}{cc}150& 178\\ 153& 156\\ 162& 184\\ 170& 176\\ 186& 173\\ 153& 186\\ 162& 159\\ 180& 183\\ 165& 180\\ 150& 156\end{array}$$

1. 7

2. 10

3. 15

4. 9

Q.

Find out the frequency of observation greater than or equal to 4.

$$\begin{array}{ccccccc}\text{Dice}& 1& 2& 3& 4& 5& 6\\ \text{Frequency}& 10& 12& 6& 4& 8& 10\end{array}$$

1. 15

2. 18

3. 22

4. 20

Q.

Given below are the heights of 20 students in centimetres.

Find the number of students whose height is less than or equal to 169 cm

$$\begin{array}{cc}150& 178\\ 153& 156\\ 162& 184\\ 170& 176\\ 186& 173\\ 153& 186\\ 162& 159\\ 180& 183\\ 165& 180\\ 150& 156\end{array}$$

1. 9

2. 12

3. 10

4. 15

Q. The arithmetic mean of marks scored by 10 students was 20. Nikhil, one of the students, inquired other 9 students and recorded their deviation from his marks as -5, 6, 2, -2, 0, 2, 4, -3, 6. Find the marks of Nikhil.

1. 19
2. 15
3. 21
4. 17