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
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: