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Graphs
Graphs often collect a set of data in a group of people. There are many kinds of graphs: pie charts (circle charts), bar graphs, line graphs, data tables, pictographs, flow charts, histograms, etc.
2,316 Questions
What is the purpose of the key in a bar graph?
The graph key is to make sure everyone understands what things mean, like a map key
Bar graphs are used to graph frequencies or amounts of data in discrete groups.
Bar graphs are used to display data in a similar way to line graphs. However, rather than using a point on a plane to define a value, a bar graph uses a horizontal or vertical rectangular bar that levels off at the appropriate level.
Did Florence Nightingale invent the pie chart or polar graph?
Florence Nightingale is usually credited with inventing the polar area diagram, there are earlier uses. Léon Lalanne used a polar diagram to show the frequency of wind directions around compass points in 1843. André-Michel Guerry is an earlier inventor of the "rose diagram" form, in an 1829 paper showing frequency of events foAlthough Florence Nightingale is usually credited with this graphical invention, there are earlier uses. Léon Lalanne used a polar diagram to show the frequency of wind directions around compass points in 1843. André-Michel Guerry is an earlier inventor of the "rose diagram" form, in an 1829 paper showing frequency of events for cyclic phenomena
What is a continuous line graph?
a continuous line graph is a graph that is similar to a broken line graph but it always grows higher and higher it never goes down. e.g. age
How do you use Excel to draw pie chart?
Select the range of values that you've entered into the spreadsheet that you want to have represented in the chart. Click on the Chart Wizard option which is near the right end of the standard toolbar. When the Chart Wizard opens you will be given a choice of different types of chart to use. Pick one of the Pie Chart formats and then proceed through the following stages, picking whatever additional options you need. When you finish, you will have your chart.
When is it best to use a bar graphs?
the best time to use a bar graph is when you have to plot something
bar graphs are used when two things are being compared out of a whole [preferably 100%] example: water to land on earth is about 1:3 or 33% to 67% hope this helps
What is the definition of line graph?
is a graph;that is used to jock down data.(uses dots and connects lines to it)
What is the steepness on a line graph called?
The steepness of a line graph is called the "gradient"
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or slope.
How do you make double-line graph on Microsoft Excel?
Go to paragraph put lines and spacing and it is there or it should be...
What are the disadvantages of bar graphs?
- Hard to quantify partial icons
Icons must be of consistent size
Best for only 2-6 categories
Very simplistic
Not as visually appealing
Best for under 50 data values
Needs small range of data
No exact numerical data
Hard to compare 2 data sets
some disadvantages u can find,
can use only with discrete data n also the graph categories can be reordered to emphasize some effects over that
Pie charts are useful for representing what?
how much the different parts of something contribute to the whole.
What is the history of Pictographs?
in the form of pictograph it is probably inspired by the early sumerians scripts which has also picture based.
William Playfair. for more information go to http://en.wikipedia.org/wiki/Pie_chart & http://en.wikipedia.org/wiki/William_Playfair
How do you make a science fair project bar graph?
Easy, just use your word processor. There should be a option for a graph, if not then get Open Office. http://www.openoffice.org/
What interval would you use for the vertical axis of the bar graph?
There's no right answer, but you should consider what you are trying to show. Many bar charts have between 5 to 10 intervals, generally even intervals. The minimum and maximum of your vertical axis might be a bit below and above your data. Do you want to highlight the differences of the groups of data? If so, chose a range that closely brackets your data. For example, you make a bar chart to show the average heights of men and women of various races. If your data ranges from 5' 2" to 5' 10", you might begin your chart at 5" and end at 6", with 2" incrrements, which would highlight the differences. If your chart range was 0 to 10', you would probably not observe the differences in the groups.
