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Data Handling III (Constructions of Bar Graphs) — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSData Handling III (Constructions of Bar Graphs)5 Marks
Question
Number of children in six different classes are given below. Represent the data on a bar graph.
Class
 $V $ $VI $ $VII $ $VIII $ $IX$ $X$
Number of children
$135$
$120$
$95$
$100$
$90$
$80$
$i.$ Which class has the maximum number of children?
$ii.$ Which class has the minimum number of children?
How do you choose the scale?
✓

Answer


Mark the horizontal axis $OX$ as “Class” and the vertical axis $OY$ as “Number of Children”.
Along the horizontal axis $OX$, choose bars of uniform $($equal$)$ width, with a uniform gap between them.
Choose a suitable scale to determine the heights of the bars, according to the space available for the graph. Here, we choose $1$ big division to represent $40$ children.
$i.$ We choose $1$ big to represent $40$ children.
$ii.$ The maximum numbers of students are in class $V$.
$iii.$ The minimum number of students are in class $X$.

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