What is the formula of pie?

What is the formula of pie?

What is the formula for calculating pi? The pi is a ratio and is obtained from a circle. If the diameter and the circumference of a circle are known, the value of pi will be as π = Circumference/ Diameter.

What are the types of pie chart?


  • 2.1 3D pie chart and perspective pie cake.
  • 2.2 Doughnut chart.
  • 2.3 Exploded pie chart.
  • 2.4 Polar area diagram.
  • 2.5 Ring chart, sunburst chart, and multilevel pie chart.
  • 2.6 Spie chart.
  • 2.7 Square chart / Waffle chart.

How do you work out the percentage of a pie chart?

How to calculate the percentage of data in the pie chart? Measure the angle of each slice of the pie chart and divide by 360 degrees. Now multiply the value by 100. The percentage of particular data will be calculated.

Does a pie chart have to equal 100?

Simply put, pie charts are best used to show parts of a whole. Specifically, pie charts should illustrate meaningful relationships between percentages, or parts of 100%. If the data you want to display doesn’t add up to 100%, a pie chart might not be your best choice.

How do you caption a pie chart?

Captions should be concise but comprehensive. They should describe the data shown, draw attention to important features contained within the figure, and may sometimes also include interpretations of the data. Figures are typically read from the bottom up, so captions go below the figure and are left-justified.

How do pie charts compare to ielts?

Pie Chart Tips

  • Always highlight the largest and smallest proportions.
  • If there are two pie charts in different time periods, then you must highlight the key changes / trends.
  • Use pie chart language – accounts for / comprises of / represents.

How do you solve a pie?

Use the formula. The circumference of a circle is found with the formula C= π*d = 2*π*r. Thus, pi equals a circle’s circumference divided by its diameter. Plug your numbers into a calculator: the result should be roughly 3.14.

Why are pie charts hated?

The case against pie charts They take up more space and are harder to read than the alternatives. The brain’s not very good at comparing the size of angles and because there’s no scale, reading accurate values is difficult. As you add more segments and colors, the problem gets worse.

How do you expand a pie chart in Excel?

Resize a chart

  1. To change the size manually, click the chart, and then drag the sizing handles to the size that you want.
  2. To use specific height and width measurements, on the Format tab, in the Size group, enter the size in the Height and Width box.

How do I create a pie chart in Excel?


  1. In your spreadsheet, select the data to use for your pie chart.
  2. Click Insert > Insert Pie or Doughnut Chart, and then pick the chart you want.
  3. Click the chart and then click the icons next to the chart to add finishing touches:

How do you analyze a pie chart?

To interpret a pie chart, compare groups.

  1. When you interpret one pie chart, look for differences in the size of the slices.
  2. When you compare multiple pie charts, look for differences in the size of slices for the same categories in all the pie charts.

What is pie chart in ielts?

Pie charts are circular charts divided into sectors or ‘pie slices’, usually illustrating percentages. The size of each pie slice shows the relative quantity of the data it represents. Together, the slices create a full circle.

Is a pie chart always in percentage?

A pie chart is a circular chart divided into wedge-like sectors, illustrating proportion. Each wedge represents a proportionate part of the whole, and the total value of the pie is always 100 percent. Pie charts can make the size of portions easy to understand at a glance.

How do you explain a pie chart in English?

A pie chart divides data into separate sections to show which individual parts make up the whole. To describe the chart, compare each “slice” of the chart to the others to determine what share of the total each category has.

How do you write pie charts?

Describing Pie Charts Step by Step

  1. the graph = the pie chart.
  2. shows = illustrates.
  3. main sources of energy = energy production from different sources.
  4. for the USA = don’t change this.
  5. in 1980 and 1990 = in two different years (1980 and 1990)

How do you move a pie chart?

Dragging the Pie

  1. Insert a pie chart.
  2. Click once on a piece of a pie or select all the pieces (using the current selection list).
  3. Click and hold to drag the pieces around.
  4. Notice here that the pieces move toward and away from the center of the pie but not anywhere else.

How do you write an Ielts pie chart?

IELTS Academic Writing Task 1. Sample 1

  1. Introduce the pie charts. Write what do they summarize.
  2. Write a general overview. Write in brief the main trends.
  3. Describe the first chart. Tell about the activities on the boys’ chart and their popularity.
  4. Describe the second chart.

How do you explode a pie chart?

Exploding an Existing Pie Chart

  1. Click your pie chart to select it.
  2. From the Chart menu, select Chart Type… The Chart Type dialog box appears.
  3. From the Chart type scroll box, select Pie.
  4. Under Chart sub-type, select one of the exploded pie charts.
  5. Click OK. The chart type is changed.

What is the dependent variable in a pie chart?

A pie graph (or pie chart) is a specialized graph used in statistics. The independent variable is plotted around a circle in either a clockwise direction or a counterclockwise direction. The dependent variable (usually a percentage) is rendered as an arc whose measure is proportional to the magnitude of the quantity.

How do you conclude a pie chart?

Step 5: Write Conclusion There is one tip that you may follow for writing the conclusion in pie-chart. You may mention the highest proportion and/or the lowest proportion out of the pie charts to write conclusion.

Why do we use pie charts?

A pie chart is best used when trying to work out the composition of something. If you have categorical data then using a pie chart would work really well as each slice can represent a different category. A good example of a pie chart can be seen below.