Introduction
to Charts / Graphs
Charts / Graphs can
be powerful ways to visualize data and convey information appealing
to the mind.
For example,
consider the data set given in Handout 01 of few countries and the
medals they have won in Olympics and the following questions:
-
Which country won the maximum gold medal, maximum silver and maximum bronze?
-
Which country won the least medals ?
-
Which country won the maximum medals altogether?
-
Which country won the minimum gold medals?
Can you answer above
mentioned questions just by seeing the data set. It may be possible
if the data is less in number but still needs some calculation and
analysis. To answer such questions you need to mentally run through
the complete data or use the functions like MIN,MAX,SUM etc to find
them out. But graphical representation makes it little more easier to
visualise the data and analyse the data in a shorter span of time.
Instead if these
values are plotted in the form of the graph as shown below it gives a
better visualisation of data. But it is very important to discern
when to analyse the data in the form of table and when to plot it in
the form of graphs/ charts.
Calc uses a Chart
Wizard to create charts or graphs from your spreadsheet data. After
the chart has been created as an object in your spreadsheet, you can
then change the chart type, adjust data ranges and then edit the
chart using the functions available in the Chart Wizard. Each change
you make in the data is automatically reflected in the chart object
placed onto your spreadsheet.
There are different
types of charts/graphs like bar graph/chart, line graph/chart,
column chart/graph, pie chart/graph, scatter graphs etc.
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