Observe the following data:

Class Total Number Number of Students Present on the Day

VI 90 81

VII 82 76

VIII 95 91

IX 70 65

X 63 62

(a) Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?
(b) Which class has the maximum number of students?
(c) Find the difference of total students and number of students present in class VI.
(d) Find the ratio of the number of students present to the total number of students of Class IX.

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Solution

(a)

The double bar graph gives information about the total number of students and the number of present students from Class VI to Class X.

(b) Class VIII has the maximum number of students.

(c) The difference of the total students and the number of students present in Class VI = 90 – 81 = 9

(d) The total number of students in Class IX = 70
Number of present students in Class IX = 65
∴ Required ratio = 65:70 = 13:14

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Question 83(iv)
Observe the following data:
$\begin{matrix} Government School, Chandpur Daily attendance & Date: 15.04.2009 Class & Total students & Number of students present on that day VI & 90 & 81 VII & 82 & 76 VIII & 95 & 91 IX & 70 & 65 X & 63 & 62 \end{matrix}$
Find the ratio of number of students present to the total number of students of class IX.

Question 83(iii)
Observe the following data:
$\begin{matrix} Government School, Chandpur Daily attendance & Date: 15.04.2009 Class & Total students & Number of students present on that day VI & 90 & 81 VII & 82 & 76 VIII & 95 & 91 IX & 70 & 65 X & 63 & 62 \end{matrix}$
In which class, the difference of total students and number of students present is minimum?

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Number of children	135	120	95	100	90	80

(a) How would you choose a scale?

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(i) Which class has the maximum number of children? And the

minimum?

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Q. Question 77(vi)
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Find the ratio of students who like Badminton in class VII to students who like Tennis in class VIII.

Q. Observe the following data:

\begin{matrix} Government School, Chandpur Daily attendance & Date: 15.04.2009 Class & Total students & Number of students present on that day VI & 90 & 81 VII & 82 & 76 VIII & 95 & 91 IX & 70 & 65 X & 63 & 62 \end{matrix}

Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?

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Class	Total Number	Number of Students Present on the Day
VI	90	81
VII	82	76
VIII	95	91
IX	70	65
X	63	62