how do you make a pie graph?

Question

i havent made a pie graph in over a year & just now mi biology teacher wants us to make a pie graph and i forgot. please help!

how do you find the percentages? or what are the steps to get a percentage?

Answer 1

To calculate the percentage, divide the number of items in each group by the total number in all groups.

If you had 2 red bugs, 10 blue bugs and 8 green bugs:
Red = 2/20 .1 10%
Blue = 10/20 .5 50%
Green = 8/20 .4 40%

So half of the pie chart would be blue, 1/10th of it would be red and 4/10th of it would be green.

Answer 2

I know what you mean, but the more common term is "pie chart," and there are some good explanations at the site below. Generally, what you do is to cut a round pie shape into slices, as you would do with a pizza pie, where the different slices represent different things, and the size of each slice is proportional to the size of whatever it represents. For example, if you made a pie chart (or graph) to show the numbers of men and women in the United States, then you would divide the pie into 2 pieces of about equal size, to show that the numbers of men and women are about equal.

Answer 3

Line graph is best used when the x-axis is time. Pie graph when showing a small number of groupings and comparing them to each other e.g. Revenue dollars of customer A, B, C, D.... A bar graph is used when showing the number of times something occurs e.g. number of items sold in a store... notebooks, pencils, papers, erasers. There are many uses for all 3 types. There is no single correct answer. It depends on which type best communicates the information.

Answer 4

If you have the data compiled, find the relative frequency by taking the amount of instances in each class (frequency) and dividing by the total for all the classes. The ercentage is the relative frequency decimal moved two decimal places up. For example using eye color:

Class Frequency Rel. Frequency %
Brown ..... .... 5 ...... .. ... 0.50 .. .. 50%
Blue .... 3 .. ...... 0.30 ..... .. 30%
Green ..... 2 . . ........ 0.20 ...... .. 20%

(the dots are to keep the graph aligned)

Now, to find the degrees for the pie chart, remember that there are 360 degres in a circle. So, take 360 times the relative frequency to find the degrees for that particular wedge:

Brown 360(.50)=180 degrees
Blue 360(.30)=108 degrees
Green 360(.20)=72 degrees

Answer 5

It is just a circle with lines drawn inside to resemble a pie cut in pieces.
Create a Graph
How about Creating your own Graph? Really. See for yourself; it's easy to create ... Click here to use the Create A Graph Classic. ...nces.ed.gov/nceskids/Graphing/pie.asp - 8k - Cached - More from this site -
Savewww.graphchart.com/pie_chart/Documentation/datafiles.htm

Answer 6

Draw a circle. That's the pie. A slice of it goes to one of the things, another slice goes to something else...

For instance, if you have three figures: men 25%, women 50%, and cats 25%, the pie graph would have a slice that looks like a fourth of the pie for the men (25% is a fourth, right?), a slice that looks like a half for the women (50% = a half) and the other quarter slice for the cats.

Got it? Cool.

Answer 7

a pie graph is a circular chart... with sections of it that look like pie pieces... so if 50% of the earth was water a pie graph representing that would have a section that is 50% of the circle

http://patents.gusmanolaw.com/archive/hit-counter-pie-chart.gif

Answer 8

like everyone else said...you start with a circle ( pie )....

the percentage will determine how big of a " piece " each entry will get.....

half the circle is 50 %

a quarter of the circle is 25 %

an eighth would be 12 + 1/2 %

etc...etc...

Answer 9

You can make one in excel. After you enter the parameters you can choose to show it as a pie graph.

Answer 10

it depends on what kind of graph you want to create, i know that you could use excel and click on the "chart wizard" button on the tool bar - that automatically makes your graph with the data you selected to use or you could go to "insert" then click on chart. Make sure that you have selected the data before clicking on chart.
Choose chart type - which would be pie
Then make sure the data is right
then you will come to where you choose your title, axes, grid lines, legend. etc
then step four is to select whether you want to have your chart on the same sheet as the data or on another sheet of it's own
then click finish and preview your chart.

i hope this is what kind of chart you wish to create and that i helped you.