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तमिलनाडु बोर्ड ऑफ सेकेंडरी एज्युकेशनएसएसएलसी (अंग्रेजी माध्यम) कक्षा ८

Form a continuous frequency distribution table and draw histogram from the following data. Age (in years) No. of persons Under 5 1 Under 10 12 Under 15 19 Under 20 26 Under 25 27 Under 30 35 - Mathematics

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प्रश्न

Form a continuous frequency distribution table and draw histogram from the following data.

Age (in years) No. of persons
Under 5 1
Under 10 12
Under 15 19
Under 20 26
Under 25 27
Under 30 35
Under 35 38
Under 40 45
Under 45 48
Under 50 53
आकृति
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उत्तर

Converting into continuous distribution we have

Class interval No. of persons
0 – 5 1
5 – 10 11
10 – 15 7
15 – 20 7
20 – 25 1
25 – 30 8
30 – 35 3
35 – 40 7
40 – 45 3
45 – 50 5
Total 53

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अध्याय 6: Statistics - Exercise 6.3 [पृष्ठ २३०]

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सामाचीर कलवी Mathematics [English] Class 8 TN Board
अध्याय 6 Statistics
Exercise 6.3 | Q 5 | पृष्ठ २३०

संबंधित प्रश्न

The histogram below represents the scores obtained by 25 students in a mathematics mental test. Use the data to:

  1. Frame a frequency distribution table.
  2. To calculate mean.
  3. To determine the Modal class.


Find the correct answer from the alternatives given.

No. of trees planted by each student

1 - 3 4 - 6 7 - 9 10 - 12
No. of students 7 8 6 4

The above data is to be shown by a frequency polygon. The coordinates of the points to show number of students in the class 4-6 are . . . . 


Construct histograms for following frequency distribution: 

Class Mark  15 25 35 45 50 55 60
Frenuencv  6 12 15 18 25 14 10

The marks scored by students in Mathematics in a certain examination are given below :

Marks Scored Number of Students
0 - 20  6
20 - 40 9
40 - 60 14
60 - 80 16
80 - 100 5

Draw histogram for the above data.


Draw a histogram and frequency polygon to represent the following data (on the same scale) which shows the monthly cost of living index of a city in a period of 2 years:

Cost of living Index Number of months
440 - 460 2
460 - 480 4
480 - 500 3
500 - 520 5
520 - 540 3
540 - 560 2
560 - 580 1
580 - 600 4
Total  24

Construct a histogram from the following distribution of total marks of 40 students in a class.

Marks 90 − 110 110 − 130 130 − 150 150 − 170 170 − 190 190 − 210
No. of Students 9 5 10 7 4 6

Histogram shows the number of people owning the different number of books. Answer the question based on it.


The number of people owning books less than 40 is ______.


In a histogram, class intervals and frequencies are taken along ______ axis and ______ axis.


Draw a histogram for the following data.

Class interval 10 – 15 15 – 20 20 – 25 25 – 30 30 – 35 35 – 40
Frequency 30 98 80 58 29 50

The following table shows the classification of percentage of marks of students and the number of students. Draw frequency polygon from the table without drawing histogram:

Result (Percentage) Number of Students
20 - 40 25
40 - 60 65
60 - 80 80
80 - 100 15

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