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GRAphprepared BY:
ARIEL c. Piol
graph
A graph is a picture that represents data in an organized manner
HISTOGRAM
HISTOGRAM
It is a graph in which the classes are marked on the horizontal axis (x – axis) and the class frequency on the vertical
axis (y – axis)
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0-10 10-20 20-30 30-40 40-50 50-60 60-70
HISTOGRAM
FREQUENCYpOLYGON
FREQUENCY pOLYGON
It is a graph that display the data using points which are connected
by the lines
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5
10
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25
30
5 15 25 35 45 44 65
FREQUENCY POLYGON
ogive
ogive
It is a graph that display the cumulativefrequencies for the classes in a
frequency distribution
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15
30
45
60
75
90
10.5 20.5 30.5 40.5 50.5 60.5 70.5
A frequency polygon is a graph that displays the data using points which is connected by the lines
OGIVE
pareto chart
pareto chart
It is a graph used to represent a frequencydistribution for a categorical data and
frequencies are displayed by the heights of verticals bars, which are arranged
in order from highest to lowest
Num
ber o
f Def
ects
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40
50
60
70
80
60
43
32
19
Scratch CracksDeviation in dimension
Other minorproblems
Pareto Diagram is a tool useful in identifying and focusing attention on the most critical problem.
PARETO DIAGRAM
pIE chart
pIE chart
It is a circle divided into portion that Represent the relative frequencies
( percentages) of the data belonging to the different categories.
20%
25%
10%
10%
Pie charts are used when the break-up of the components of quantity is to be graphed.
PIE CHARTS
35%
Band chart
Band chart
A chart presenting information in strata or layer form
BAND GRAPH
Placing two or more band graphs in parallel makes it easy to compare the break-up of components of two quantities.
gantt chart
gantt chart
A chart in which a series of horizontal lines shows the amount of work done or production completed in certain periods
of time in relation to the amount planned for those periods
Planned time Actual time taken
GANTT CHART
Gantt charts are use to understand the details of a plan and progress in meeting the specified time schedule.
Line graph
Line graph
It is a type of chart which displays information as a series of data points
called 'markers' connected by straight line segments.
54.5
43.5
32.5
21.5
10.5
0
Line graph reveal the overall trend of the data. They are used to look at the direction of changes over a time frame.
LINE GRAPH
Bar graft
Bar graft
It is similar to histogram. The bases of the rectangles are arbitrary intervals
whose center are the codes.
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JAN FEB MAR APR MAY
Bar graphs are constructed with parallel bars of identical width but differing length. They are used to compare the size of two quantities.
BAR GRAPH
Scatter diagram
Scatter diagram
It is used to examined possible relationship between two
numerical variables.
No. of errors per hour
Tem
pera
ture
Scatter diagram is a graph that shows the degree and direction of relationship between two variables.
SCATTER DIAGRAMS
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