A data is a collection of facts, such as numbers, words, measurements, observations or even just descriptions of things.

Number of people in various age groups in a town is given in the following table:

How many senior citizens are there in the town?

The marks (out of 10) obtained by $28$ students in a mathematics test are listed below:

$$\begin{gathered} 8 1 2 6 5 5 6 \\ 1 4 7 8 2 5 8 \\ 3 3 8 4 3 3 4 \\ 8 7 8 3 2 2 1 \end{gathered}$$

Construct a frequency table for the information given.

Mr Garg, Mr Singh, Ms Dubey and Ms Neelam are four teachers in a school teaching classes $\mathrm{VI}$ to $\mathrm{VIII}$. Mr Garg can teach English and Science only. Mr Singh can teach Mathematics and Science only. Ms Neelam cannot teach Hindi. Ms Dubey teaches only one subject and there is a teacher for all the subjects mentioned in the table below. Fill in the table using ($/$) and ($\mathrm{X}$) and answer the questions that follow.

How many teachers can teach exactly two subjects$?$

Rajesh is a footballer. In the last $20$ matches, he scored the following number of goals:
$2,1,2,1,0,3,1,2,3,1,3,0,2,3,1,2,1,3,1,2$

Make a frequency distribution table for this data.

The weights of $20$ marbles (in grams) are given below:

$52, 36, 44, 38, 36, 42, 31, 25, 32, 48, 44, 46, 38, 36, 45, 30, 50, 40, 38, 32$

Arrange the above data in a tabular form.

Number of people in various age groups in a town is given in the following table:

Which age groups have the same population?

Mr. Garg, Mr. Singh, Ms. Dubey and Ms. Neelam are four teachers in a school teaching classes $\mathrm{VI}$ to  $\mathrm{VIII}$. Mr. Garg can teach English and Science only. Mr. Singh can teach Mathematics and Science only. Ms. Neelam cannot teach Hindi. Ms. Dubey teaches only one subject and there is a teacher for all the subjects mentioned in the table below. 

Which subject can be taught by the maximum number of teachers?

Garima collected the data regarding weights of students of her class and prepared the following table:

Primary data is collected by:

Mr Garg, Mr Singh, Ms Dubey and Ms Neelam are four teachers in a school teaching classes $\mathrm{VI}$ to $\mathrm{VIII}$. Mr Garg can teach English and Science only. Mr Singh can teach Mathematics and Science only. Ms Neelam cannot teach Hindi. Ms Dubey teaches only one subject and there is a teacher for all the subjects mentioned in the table below. Fill in the table using ($/$) and ($\mathrm{X}$) and answer the questions that follow.

Which subject is Ms Dubey teaching$?$

Define the term- Data.

A dice was thrown $20$ times and the following outcomes were recorded:

$5,2,1,3,4,4,5,6,2,1,4,5,1,2,3,3,5,2,4,6.$

Arrange the above data in ascending order and prepare the frequency table.

Mr Garg, Mr Singh, Ms Dubey and Ms Neelam are four teachers in a school teaching classes $\mathrm{VI}$ to $\mathrm{VIII}$. Mr Garg can teach English and Science only. Mr Singh can teach Mathematics and Science only. Ms Neelam cannot teach Hindi. Ms Dubey teaches only one subject and there is a teacher for all the subjects mentioned in the table below. Fill in the table using ($/$) and ($\mathrm{X}$) and answer the questions that follow.

State True or False:

If it is mandatory for a teacher to take $24$ periods in a week, then amongst the four teachers a total of $96$ periods can be allotted in the school’s timetable.

Data obtained in the _____ form is called raw data.