Frequency Distribution of Ungrouped Data

Q. Ungrouped data is divided into small and convenient groups called _________.

1. raw data
2. sorted groups
3. arranged groups
4. class intervals

Q. Marks of the students of class VIII-C is listed as:
54, 65, 54, 76, 23, 34, 54, 34, 67, 76, 24, 65, 67, 18, 45, 45, 23, 34, 56, 65, 76, 34, 23, 65, 34, 50, 34, 76, 86, 34, 54, 76, 65, 100.

What is the frequency of 76 in the given distribution?

1. 5
2. 4
3. 6
4. 7

Q.

Consider the marks obtained by 20 students out of 100 marks in a science quiz

30 40 50 35 55 60 40 30 60 75

75 60 30 40 60 55 35 50 40 30

What is the frequency of 40 marks?

1. 2

2. 4

3. 1

4. 3

Q. Tally marks are used for finding

1. Mean
2. Mid-points
3. Frequency
4. Range

Q.

A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows:$$\begin{array}{cccccc}0.03& 0.08& 0.08& 0.09& 0.04& 0.17\\ 0.16& 0.05& 0.02& 0.06& 0.18& 0.20\\ 0.11& 0.08& 0.12& 0.13& 0.22& 0.07\\ 0.08& 0.01& 0.10& 0.06& 0.09& 0.18\\ 0.11& 0.07& 0.05& 0.07& 0.01& 0.04\end{array}$$
The concentration of sulphur dioxide was more than 0.11 parts per million for 8 days.

1. True

2. False

Q. Marks obtained by 5 students are 45, 46, 77, 75 and 92. The data given in this manner is called data.

1. grouped
2. ungrouped
3. mixed