Last year in the month of April, there were 23 academics days in Rohit’s school. Rohit has written the number of students who were present in those 23 days.

Those are -

51 43 51 47 43 51 51 47 38 51

47 51 47 51 47 51 51 43 47 43

51 42

Now I make the frequency chart with tally mark and make bar diagram with the help of this chart.

In this year, we have arranged to explain making of various types of science models in the science exhibition of our school. Everyday students of many schools and guardians are coming to see in huge number. Let's list those who have come in to the exhibition today from 10 am to 12 noon on Sunday.

Let,

(B, G, B, M, G, G, M, B, W, B, W, G, W, G, G, M, M, W, B, B, B, W, W, G, G, W, B, M, M, B, G, G, B, W, M, M, W, M, M, G, G, W, M]

Let's make a frequency table by the raw data using tally marks and make a bar-diagram.

I make a bar diagram showing how many students of our class of 40 help in their household work (in hours) during holiday. Let’s see the bar diagram and try to find out the answer of various questions.

i. Let’s write how many students of our class do the domestic work every holiday from the bar diagram and for how long.

ii. Let’s write how many students help in their domestic work for maximum time.

iii. Let’s write how many students help in their domestic work for two hours on every holiday.

Let’s see the pie chart below and find the answers to the questions.

The pie chart of which types of songs the audience likes to listen:

i. Let’s write how many parts of the total circular region is the sector of the audience of Folk song

ii. Let’s write from the pie chart which type of songs has the most number of listeners

iii. Let’s write which type of songs has the least number of listeners.

Let’s see the pie chart below and find the answers to the questions.

The pie-chart of what kind of programmes the audience likes –

i. Let’s write how many parts of the total circular region is the sector of the audience who watch news in the pie chart.

ii. Let’s write what kind of programme gets the most audience.

iii. Let’s write what kind of programme gets the least audience

iv. Let’s write how many parts of the total audience watch the programmes of sports.