"Question 5 Use the tables below to draw linear graphs. (a) The number of days a hill side city received snow in different years. Year 2003 2004 2005 2006 Days 8 10 5 12 (b) Population (in thousands) of men and women in a village in different years. Year 2003 2004 2005 2006 2007 Number of men 12 12.5 13 13.2 13.5 Number of women 11.3 11.9 13 13.6 12.8
Class 8 Introduction to Graphs Page 238"
Answers
Graphs are visual representations of data collected. In most cases, the data exists in the form of a table. In many cases, the table itself is displayed.
There are
many different types of graphs.
a.Bar graph.
b.Pie graph or pie chart.
c.Line graph.
A linear graph is different from a line graph, in a linear graph, the rest of points on the graph line up in an orderly manner. A linear graph is a graph that consists of a single straight line segment graph obtained by joining the plotted points is a line. Such graphs are called linear graphs.
Graphical representation of data makes it easier to understand the data.
(i) A bar graph is used to show comparison among categories. It may
consist of two or more parallel vertical (or horizontal) bars (rectangles).
(ii) A pie graph is used to compare parts of a whole.
(iii) A histogram is a bar graph that shows data in intervals.
A line graph displays data that changes continuously over period of time. A line graph which is a whole unbroken line is called a linear graph. To draw such a line we need to locate some points on the graph sheet
For fixing a point on the graph sheet we need, x-coordinate and y-coordinate. The horizontal line (usually called the x-axis) the vertical line (usually called the y-axis)
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Graph is in the attachment.
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Hope this will help you...
