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 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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90

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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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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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