Worksheet Solution: Smart Charts

# Worksheet Solution: Smart Charts - Notes | Study Mathematics for Class 3: NCERT - Class 3

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Q.1. The number of members in 20 families are given below:
4, 6, 5, 5, 4, 6, 3, 3, 5, 5, 3, 5, 4, 4, 6, 7, 3, 5, 5, 7
Prepare a frequency distribution of data.
Ans.

 Number of members 3 4 5 6 7 Frequency 4 4 7 3 2

Q.2. The number of students in 7 different classes is given below. Represent this data on the bar graph.

 Class 6th 7th 8th 9th 10th 11th 12th Number of Students 130 120 135 130 150 80 75

Ans.

Q.3. The following data gives the number of children in 40 families:
1, 2, 6, 5, 1, 5, 1, 3, 2, 6, 2, 3, 4, 2, 0, 4, 4, 3, 2, 2, 0, 0, 1, 2, 2, 4, 3, 2, 1, 0, 5, 1, 2, 4, 3, 4, 1, 6, 2, 2
Represent it in the form of a frequency distribution.
Ans.

 Wages (in Dollars) 1 2 3 4 5 6 Frequency 4 7 12 5 6 3 3

Q.4. The number of trees planted by Eco-club of a school in different years is given below.

 Year 2005 2006 2007 2008 2009 2010 Number of Trees to be Planted 150 220 350 400 300 380

Ans.

Q.5. The electricity bills (in dollars) of 25 houses of a certain locality for a month are given below:
324, 700, 617, 400, 356, 365, 435, 506, 548, 736, 780, 378, 570, 685, 312, 630, 584, 674, 754, 776, 596, 745, 565, 763, 472
Arrange the above data in increasing order and form a frequency table using equal class intervals, starting from 300-400, where 400 is not included.
Ans.

 Amount of the bill (in Dollars) 300-400 400-500 500-600 600-700 700-800 Frequency 5 3 6 4 7

Q.6. The following table shows the favorite sports of 300 students of a school.

 Sports Cricket Football Hockey Badminton Swimming Tennis No. of students 80 40 20 30 45 75

Ans.

Q.7. The weekly pocket expenses (in dollars) of 30 students of a class are given below:
62, 80, 110, 75, 84, 73, 60, 62, 100, 87, 78, 94, 117, 86, 65, 68, 90, 80, 118, 72, 95, 72, 103, 96, 64, 94, 87, 85, 105, 115
Construct a frequency table with class intervals 60-70 (where 70 is not included) 70-80, 80-90 etc.
Ans.

 Expenses (in Dollars) 60-70 70-80 80-90 90-100 100-110 110-120 Frequency 6 5 7 5 3 4

Q.8. The following are the marks scored by Aaron out of 50 in different subjects in an exam. Represent this information on a bar graph

 Subjects English Urdu Math Science History Marks Obtained 40 30 50 45 25

Represent this information on a bar graph.
Ans.

Q.9. The heights (in cm) of 22 students were recorded as under:
125, 132, 138, 144, 142, 136, 134, 125, 135, 130, 126, 132, 135, 142, 143, 128, 126, 136, 135, 130, 130, 133
Prepare a frequency distribution table, taking equal class intervals and starting from 125-130, where 130 is not included.
Ans.

 Height (in cm) 125-130 130-135 135-140 140-145 Frequency 5 7 6 4

Q.10. The following data shows the birth rate per thousand of different countries during a certain year. Draw a bar graph.

 Country India Pakistan China Sri Lanka Russia Birth Rate 24 26 30 20 18

Read the questions carefully given in the worksheet on bar graph and represent the data in the column graph. The graph are shown below to check the exact the bar graph.
Ans.

Q.11. A dice was thrown 30 times and the following outcomes were noted:
2, 1, 2, 4, 6, 1, 2, 3, 6, 5, 4, 4, 3, 1, 1, 3, 1, 1, 5, 6, 6, 2, 2, 3, 4, 2, 5, 5, 6, 4
Prepare a frequency table.
Ans.

 Outcome 1 2 3 4 5 6 Frequency 6 6 4 5 4 5

Q.12. The number of bed-sheets manufactured by a factory during five consecutive weeks is given below.

 Week First Second Third Fourth Fifth Number of Bed-sheets 600 850 700 300 900

Ans.

Q.13. The marks obtained by 40 students of a class in an examination are given below:
8, 47, 22, 31, 17, 13, 38, 26, 3, 34, 29, 11, 22, 7, 15, 24, 38, 31, 21, 35, 42, 24, 45, 23, 21, 27, 29, 49, 25, 48, 21, 15, 18, 27, 19, 45, 14, 34, 37, 34
Prepare a frequency distribution table with equal class intervals, starting from 0-10 (where 10 is not included).
Ans.

 Marks 0-10 10-20 20-30 30-40 40-50 Frequency 3 8 14 9 6

Q.14. The number of absentees in class VIII was recorded in a particular week. Represent this data on the bar graph

 Days Mon. Tues. Wed. Thurs. Fri. Sat. Number of Absentees 130 120 135 130 150 80

(a) On which day the maximum and minimum students were absent?
(b) How many students were absent on Wednesday and Friday?
(c) On which days the same number of students was absent?
Ans.

Q.15. The weekly wages (in dollars) of 28 workers of a factory are given below:
668, 610, 642, 658, 668, 620, 719, 720, 700, 690, 710, 642, 672, 654, 692, 706, 718, 702, 704, 678, 615, 640, 680, 716, 705, 615, 636, 656
Construct a frequency table with equal class intervals, taking the first of the class intervals as 610-630, where 630 is not included.
Ans.

 Wages (in Dollars) 610-630 630-650 650-670 670-690 690-710 710-730 Frequency 4 4 5 3 7 5

Q.16. The population of a particular state in different years is given below.

 Year 2005 2006 2007 2008 2009 2010 Population in Lakhs 35 40 50 65 90 105

Represent the above data using the bar graph.
Ans.

Q.17. The daily earnings (in dollars) of 24 stores in a market was recorded as under:
715, 650, 685, 550, 573, 530, 610, 525, 742, 680, 736, 524, 500, 585, 723, 545, 532, 560, 580, 545, 625, 630, 645, 700
Prepare a frequency table taking equal class sizes. One such class is 500-550, where 550 is not Included.
Ans.

 Daily earnings (in Dollars) 500-550 550-600 600-650 650-700 700-750 Frequency 7 5 4 3 5

Q.18. The following data represents the sale of refrigerator sets in a showroom in first 6 months of the year.

 Months Jan Feb March April May June No. of Refrigerators Sold 20 25 15 40 35 30

Ans.

Q.19. The average monthly attendance of a class is given.

 Month July Aug Sep Oct Nov Dec Jan Feb Attendance 45 46 30 50 38 20 36 32

Draw the bar graph of the data given.
In which month the average attendance is minimum or maximum?
In which month the average attendance was less than 40?
Find the difference between the maximum and minimum average attendance?
Ans.

The document Worksheet Solution: Smart Charts - Notes | Study Mathematics for Class 3: NCERT - Class 3 is a part of the Class 3 Course Mathematics for Class 3: NCERT.
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## Mathematics for Class 3: NCERT

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