The number of students in 7 different classes is shown in the following table. When a bar graph is drawn, which class is represented by a shorter bar and which one by a taller bar respectively?

class 12, class 10

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class 12, class 11

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class 10, class 12

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class 7, class 6

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Solution

The correct option is A
class 12, class 10

It is very clear from the values in the table that class 12 has the least value while class 10 has the maximum number of students. So the bar graph for class 10 will be tallest while for class 12 it will be the shortest one.

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No. of students	75	35	50	25	65

The table below shows the number of students in class 10 of a school, classified according to their heights:

Height

(cm)

Number of Students

120 − 125

125 − 130

130 − 135

135 − 140

140 − 145

145 − 150

150 − 155

155 − 160

Calculate the mean height

Which of the given less than cumulative frequency curve (ogive) correctly represents the following distribution?

$\begin{matrix} Height & 110 - 120 & 120 - 130 & 130 - 140 & 140 - 150 & 150 - 160 Number of students & 7 & 9 & 12 & 10 & 4 \end{matrix}$

\begin{matrix} Year & 2012 - 13 & 2013 - 14 & 2014 - 15 & 2015 - 16 & 2016 - 17 No. of students & 800 & 975 & 1100 & 1400 & 1625 \end{matrix}

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