Q&A for How to Make a Pie Chart

The entire arc of a protractor is 180. Use the 90-degree radius as the base of the protractor and mark the opposite side to find 180. Then, flip the protractor around on your new hash mark and find 22 degrees. Make your line a hair under the 22-degree mark and erase your 180-degree guide line.

No. You do need to indicate what each slice of your pie chart represents though. You could write each label directly inside of the slice representing it, or you could draw an arrow from a label to its section. Colors tend to make it easier to differentiate between the slices though, especially if some of the sections are really small.

Each pie chart represents a single set of data. You could make a separate pie chart that explains a part of a larger pie chart, but it would probably be confusing to put 1 pie chart inside of another.

A pie chart is a type of graph used to represent a bunch of data. It is a particularly good chart if you need to illustrate portions of a whole. For example, if you wanted to demonstrate how many boys are in a class compared to the number of girls, a pie chart would be a good choice because it shows how each number makes up the whole.

You could use the circle tool to create a circle, fill it with a color, and then draw each slice with the line tool. This would be really difficult to do accurately though. Consider using Word or Excel if you have access to those programs. They can generate a pie chart for you that you can copy and paste into MS paint.

The entire arc of your protractor is 180 degrees. So make a hash mark at the end of your protractor and the then subtract 180 from 200. This gives you 20 degrees. Set your protractor at the base of your new hash mark and then mark off 20. Erase the first hash mark that you made to get a perfect 200.

If the data is in percentage points, multiply each number by one hundred and then follow the same steps given above.

To convert an angle into a pie chart percentage, divide the angle by 360°. That will give you a fraction. Multiply that fraction by 100%. For example, if the angle is 30°, divide 30° by 360°. That's 1/12. Multiply 1/12 by 100%, which is 8.33%, the pie chart percentage equivalent of 30°.

No. Pie charts are for positive numbers only.

The denominator is the bottom (or right, depending on how it's written) part of the fraction. For example, if there are 6 equal pieces of cake and you take away 1, you're left with 5/6 of the cake. In 5/6, 5 is the numerator and 6 is the denominator.

It can be about almost anything, as long as it uses positive numbers. For example, you can make a pie chart about what percentage of people smoke, or the percentage of cars sold by a specific company in a month or year.

No. You could use any circular template for this.

It's up to you to decide the radius of the circle. The larger the circle, the larger the radius. You can find the diameter of the circle and divide it by two.

The sum of the measures of the angles of a circle is 360 degrees, so you can't go over 360.

To pictorially depict your data. It's the mathematical depiction of data more precisely.

Yes, you can, but it won't be as neat.

For a bigger circle, you can use a disc or some large circular object to trace. You can also use a compass.

It's a tool used for drawing angles.

That's the angle formed at the center of the chart by a segment of the pie.

You should use the outer part. The inner part on most protractors is way too small.

If a segment of the pie consists of 18% of the full pie, and you want to find the central angle of the segment, set up an equation in which 18/100 (which is 18%) is set equal to the fraction x/360, where x is the central angle of the segment you're considering. By cross-multiplying, we see that 100x = 6,480. So x = 64.8°. Thus, 64.8° is 18% of 360°.

You can use the 360 angle and use your protractor to measure it.

Pie charts are generally used to show percentage or proportional data, and usually, the percentage represented by each category is provided next to the corresponding slice of pie. Pie charts are good for displaying data for around 6 categories or fewer.

N,o it is not necessary but it is recommended so people will know what section it is. If you don't have colors you can just label it.

That is fine. Just convert it to a fraction for your chart.

No, there are no substitutes for a protractor.

Just use a calculator.

You multiply 0.01 x 360, which is 3.6. Because 0.01 is 1% there are 360 degrees in a circle. So 1% is 3.6 degrees of a circle's arc to the center point.

Set up a fraction with the angle as the numerator and 360 as the denominator (360 being the number of degrees in a full circle. For example, say the angle you're considering is 70°, so the fraction you write is 70/360. Set that fraction equal to another fraction with "x" as the numerator and 100 as the denominator. Cross-multiply to solve for x, which will be the percentage you're looking for. In this example, 70/360 = x/100. By cross-multiplying, 7,000 = 360x. Divide both sides of the equation by 360, making x equal to 19.44%.

Align the middle of a protractor with the center of the pie chart. Then align either end of the protractor with one edge of an angle on the chart, and see what angle on the protractor lines up with the other edge of the angle you're measuring.