this all the clear notes of pie chart all points gathered by the higher authors

1. WELCOME
TO
ALL

2. PIE CHART
MR.SURIYAKUMAR BE

3. TOPIC
• Defenation of pie chart
• What is pie chart
• Use of pie chart
• When do use pie chart
• Types of pie chart
• Tipes to consider
• How to read pie chart

4. DEFINITION
• A Pie Chart is a circular chart which is divided
into sectors in which the area of each sector
represents the size of the data. It is also known
as circle graph. Remember that there are 360
degree in a circle so each group in the pie chart
will be a proportion of 360 degree.

5. WHAT IS A PIE CHART?
• What do you think of when you hear the word 'pie?' You more than likely think of the
delicious dessert with a flaky crust and the filling of your choice. A 'pie' is certainly
different than a 'pie chart,' although, oddly enough, both can be divided up into slices.
• A pie chart displays data, information, and statistics in an easy-to-read 'pie-slice'
format with varying slice sizes telling you how much of one data element exists. The
bigger the slice, the more of that particular data was gathered.
• Let's take, for example, the pie chart shown below. It represents the percentage of
people who own various pets. As you can see, the 'dog ownership' slice is by far the
largest, which means that most people represented in this chart own a dog as opposed
to a cat, fish, or other animal.

6. USES OF A PIE CHART
• The main use of a pie chart is to show comparison. When items are presented on a pie
chart, you can easily see which item is the most popular and which is the least popular.
• Various applications of pie charts can be found in business, school, and at home. For
business, pie charts can be used to show the success or failure of certain products or
services. They can also be used to show market reach of a business compared to similar
businesses.
• At school, pie chart applications include showing how much time is allotted to each
subject. It can also be used to show the number of girls to boys in various classes. You can
also use pie charts to see how much money you spend in different areas.At home, pie
charts can be useful when figuring out your diet.
• There are many applications of pie charts and all are designed to help you to easily grasp
a bunch of information visually.

7. WHEN TO USE A PIE CHART
• 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.
• Another good use for a pie chart would be to compare areas of growth within a
business such as turnover, profit and exposure.
• A pie chart is a circular graph that is broken down into segments (i.e slices of
pie).These segments represent each category's contribution to display parts of a
whole. So if your data does not represent this then you should choose another chart.
• Also when there are similar sized categories, it can be difficult to interpret, so keep
that in mind. Although they are very aesthetically pleasing and easy interpret and
very powerfu

8. TYPES OF PIE CHART
TYPES:
• 1. 2-D Pie > Pie, Pie of Pie, Bar of Pie
• 2. 3-D Pie
• 3. Doughnut
USAGE:
• Pie chart is used to show data in proportion.
• It is used to display contribution of each value (slice) to a total (pie)
• The 2-D Pie used to show the proportions of a whole. It is used when
numbers equal 100%. The chart contains only a few pie slices (many
slices make the angles hard to estimate).

9. • *The Pie of pie used to show the proportions of a whole. In pie of pie we
can take some values from first pie and combine them in second pie to
make smallSplercentage more readable or highlight the value in second
pie.
• The illustration of pie of pie >>
•
1st Qtr2nd Qtr3rd Qtr4th Qtr*
• The Bar of pie used to show the proportions of a whole. In Bar of pie we
can take some values from first pie and combine them in stacked bar to
makessmall percentage more readable or highlight the value in stacked
bar
• .The illustration of Bar of pie >>
• 1st Qtr2nd Oer3rd Qtr4th Qtr

10. • The 3-D Pie used to show the proportions of a whole. It is used when
numbers equal 100%. The chart contains only a few pie slices (many
slices make the angles hard to estimate).
• The illustration of 3-D Pie >>>>
• 1st Qtr 2nd Qtr 3rd Qtr 4th Qtr
• The Doughnut used to show the proportions of a whole. It is used
when there are multiple series that relate to the large sum.
• The illustration of Doughnut.
• 1stQtr 2ndQtr 3rdQtr 4thQtr

11. This are
The
Furture
Example of
Pie chart
Data

12. TIPS TO BE CONSIDERED
• 1. On a pie chart, although the axis is not apparent, it does have one. It is in fact
the perimeter of the circle that serves as the axis.
• 2. A pie chart only really works well when you only have one set of data.
• 3. If this is the case then you should stay clear of a pie chart as each segment is
equal to its value then when totaled equal to the whole, so using negative values
can be rather confusing.
• 4. Useful for displaying data that is classified into nominal or ordinal categories.
Generally used to show percentage or proportional data. Try not use any zero
values, as they cannot be represented.
• 5. It is best practice to never have any more than 7 categories as it becomes
harder for the eye to distinguish relativity of size between each section.

13. HOW TO READ A PIE CHART
• 1. Reading a pie chart is as easy as figuring out which slice of an actual pie is the
biggest.
• 2. Usually, you have several bits of data, and each is pictured on the pie chart as a
pie slice.
• 3. You will see that some data have larger slices than others.
• 4. So you can easily decipher which data is more important to your audience than
others.

18. THANK YOU ALL