The document discusses the history and definition of pie charts, first introduced by statistician William Playfair in 1801. It outlines the steps to create a pie chart using data, including drawing a table, inserting data, and calculating angles for different segments. An example of expenses for a nuclear family is provided to illustrate the process of forming a pie chart.

2. PIE CHART
PREPARED BY AFRASIYAB
ROLL NO B-02
BS BOTANY 4TH SEMESTER

3. WHO USED PIE
CHART FIRSTLY?A pie chart is used by statistician William Playfair,s in 1801 for the
first time. He used a pie chart for dipicting proportion of the
Turkish empire located in Asia and Europe.

4. DEFINITION OF PIAE CHART
A pie chart is circular drawing that is divided in to segment, with
each segment representing data category or group.

5. TOOL USED TO DRAW A PIE
CHART
1 PARCAR
• USED TO DRAW CIRCLE
2 FOOT
• USED TO DRAW LINE

6. 3 D FOOT
• USED TO FIND ANGLE
4 PENCIL
• FOR WRITING

7. PROCEDURE TO PRESENT DATA BY PIE
CHART
STEP FIRST
DRAW A TABLE
SECOND STEP
INSERT DATA IN TABLE

8. THIIRD STEP
SUM ALL THE FREQUENCY
FOUR STEP
FIND OUT DEGREE

9. FIFTH STEP
DRAW ACIRCLE
SIXTH STEP
FIND OUT ANGLE

10. Solved Example
• Question: the following table show the
expenses of a nuclear family for month for
some day today items.
Expense Money/$
Mortgage 400
Food 120
Dress 80

11. Solution
The total monthly expenditure=400+120+80=600
To draw a pie chart, first lets form a pie chart using the
relevant formula.
Subject Ratio
Mortgage 400/600X360=240
Food 120/600X360=72
Dress 80/600X360=48

12. Continued………………….
It can be seen that the total of ratios= 240+72+48=360
So we get pie Diagram:

13. References
• www.google.com
• www.Wikipedia.com
• www.slideshare.net
• Math.tutorvista.com

14. .
THE END