Draw a bar graph for the following data. Population of India in successive census years: Year 1941 1951 1961 1971 1981 1991 2001 Population (in millions) (approx) 320 360 440 550 680 850 1000 Source: Data from census of lndia 1991 and 2001 .

Given, Population of India in successive census years: Year 1941 1951 1961 1971 1981 1991 2001 Population (in millions) (approx) 320 360 440 550 680 850 1000 We have to draw a bar graph for the above data. A bar chart or bar graph is a chart or graph that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent. Now, Let us draw the bar graph for the above data. x−axis contains successive years y−axis contains population (in millions) Hence, the bar graph is drawn for the given data.

Draw a pie chart for the following data. Item of expenditure Food Health Clothing Education Savings Amount spent in rupees 3750 1875 1875 1200 7500

Given, Item of expenditure Food Health Clothing Education Savings Amount spent in rupees 3750 1875 1875 1200 7500 We have to draw a pie chart for the given data. A pie chart is a circular statistical graphic, which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice, is proportional to the quantity it represents. Now, Total amount spend = 3750 + 1875 + 1875 + 1200 + 7500 = 16200 . We make a table to find the angle of the sectors. The table is shown below. Item of expenditure Amount spent in rupees Ratio between expenditure and total income Angle of sector Food 3750 3750 16200 = 25 108 25 108 × 360 ° = 83 . 3 ° Health 1875 1875 16200 = 25 216 25 216 × 360 ° = 41 . 7 ° Clothing 1875 1875 16200 = 25 216 25 216 × 360 ° = 41 . 7 ° Education 1200 1200 16200 = 2 27 2 27 × 360 ° = 26 . 7 ° Savings 7500 7500 16200 = 25 54 25 54 × 360 ° = 166 . 6 ° Using Protractor, we can split a circle into five parts for the corresponding angles as obtained above. Hence, the Pie chart is drawn for the given data as above.

Draw a double bar graph for the following data. Birth and Death rates of different states in 1999 . State Birth Rate (Per 1000 ) Death Rate (Per 1000 ) Andhra Pradesh 22 8 Karnataka 22 8 Tamil Nadu 19 8 Kerala 18 6 Maharashtra 21 8 Orissa 24 11 Source: The table is taken from vital statistics SRS 1999 .

Given: Birth and Death rates of different states in 1999 . State Birth Rate (Per 1000 ) Death Rate (Per 1000 ) Andhra Pradesh 22 8 Karnataka 22 8 Tamil Nadu 19 8 Kerala 18 6 Maharashtra 21 8 Orissa 24 11 Source: The table is taken from vital statistics SRS 1999 . We have to draw a double bar graph for the given data. A bar graph is a graphical display of data using single bars of various heights. A double bar graph is a graphical display of information using two bars besides each other at various heights. We can use a double bar graph to compare two data groups. A double bar graph has two axes. Now, the double bar graph for the given data is drawn below: X-axis is considered for various States. Y-axis is considered for Birth rate and Death rate. Thus, the double bar graph for the given data is drawn.

Draw a Pie chart for the following data. Time spent by a child during a day: Time spent for Sleep School Play Others Time spent 8 hours 6 hours 2 hours 8 hours

Given, Time spent by a child during a day: Time spent for Sleep School Play Others Time spent 8 hours 6 hours 2 hours 8 hours We have to draw a Pie chart for the following data. A Pie chart is a circular statistical graphic, which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice, is proportional to the quantity it represents. Now, Total number of hours = 8 + 6 + 2 + 8 = 24 . We make a table to find the angle of the sectors. The table is shown below. Time spent for Time spent (in hours) Angle of sector Sleep 8 8 24 × 360 ° = 120 ° School 6 6 24 × 360 ° = 90 ° Play 2 2 24 × 360 ° = 30 ° Others 8 8 24 × 360 ° = 120 ° Using Protractor, we can split a circle into four parts for the corresponding angles as obtained above. Hence, the Pie chart is drawn for the given data.

EASY

7th Andhra Pradesh Board

IMPORTANT

Earn 100

The monthly budget of a family is given in the table on the left. This data has been presented in a pie chart on the right. The higher the share of expenditure of particular item of the total income, the more the area occupied by the item in the pie chart.

Budget head Amount ( $₹$ )

Food $1500$

Education $750$

Others $2250$

Savings $4500$

Total income $9000$

Looking at the pie chart answer the following question.

Say true or false: The largest part of the income is saved.

100% studentsanswered this correctly

Important Questions on Data Handling

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise 14>Q (iii)

The monthly budget of a family is given in the table on the left. This data has been presented in a pie chart on the right. The higher the share of expenditure of particular item of the total income, the more the area occupied by the item in the pie chart.

Budget head	Amount ( $₹$ )
Food	$1500$
Education	$750$
Others	$2250$
Savings	$4500$
Total income	$9000$

Question Image

Looking at the pie chart answer the following question.

Say true or false: The Least amount of money is spent on education.

HARD

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 1

Draw a bar graph for the following data. Population of India in successive census years:

Year	$1941$	$1951$	$1961$	$1971$	$1981$	$1991$	$2001$
Population (in millions) (approx)	$320$	$360$	$440$	$550$	$680$	$850$	$1000$

Source: Data from census of lndia $1991$ and $2001$ .

HARD

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 2

Draw a pie chart for the following data.

Item of expenditure	Food	Health	Clothing	Education	Savings
Amount spent in rupees	$3750$	$1875$	$1875$	$1200$	$7500$

MEDIUM

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 3

Draw a double bar graph for the following data. Birth and Death rates of different states in $1999$ .

State	Birth Rate (Per $1000$ )	Death Rate (Per $1000$ )
Andhra Pradesh	$22$	$8$
Karnataka	$22$	$8$
Tamil Nadu	$19$	$8$
Kerala	$18$	$6$
Maharashtra	$21$	$8$
Orissa	$24$	$11$

Source: The table is taken from vital statistics SRS $1999$ .

HARD

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 4

Draw a Pie chart for the following data. Time spent by a child during a day:

Time spent for	Sleep	School	Play	Others
Time spent	$8$ hours	$6$ hours	$2$ hours	$8$ hours

MEDIUM

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 5

The adjoining pie chart gives the expenditure on various items during a month for a family. (The numbers written around the pie chart tell us the angles made by each sector at the centre.)

Question Image

Answer the following: On which item is the expenditure minimum?

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 5

The adjoining pie chart gives the expenditure on various items during a month for a family. (The numbers written in the pie chart tell us the angles made by each sector at the centre.)

Question Image

Answer the following: On which item is the expenditure maximum?

EASY

7th Andhra Pradesh Board

IMPORTANT

Mathematics 7>Chapter 7 - Data Handling>Exercise>Q 5

The adjoining pie chart gives the expenditure on various items during a month for a family. (The numbers written in the pie chart tell us the angles made by each sector at the centre.)

Question Image

Answer the following: If the monthly income of the family is $₹ 9000$ , what is the expenditure on rent?

Important Questions on Data Handling

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