Graphs

GraphsGraphs

0

20

40

60

80

100

Percentage

1st Qtr 2nd Qtr 3rd Qtr 4th Qtr

Quarters

Grades on Graphing Tests

Barnhart Kids

Other Kids

Earth and Space Science

Class A

Class B

Pictograph

Types of Graphs

Line Graphs Plots

Circle Graph

Histogram

Single

Double

Stem & Leaf

Line

Single

Double

Box - and - Whisker Plot

Scatter

Bar Graphs

Circle GraphCircle Graph

Circle graphs are Circle graphs are used to display used to display parts of the data parts of the data in relation to the in relation to the entire amount of entire amount of data.data.

All circle graphs All circle graphs need a title.need a title.

Each part is called Each part is called a sector and is a sector and is labeled.labeled.

Circle GraphCircle GraphEye Color

40%

32%

20%

8%

BrownBlueGreenOther

More Info

HistogramHistogram

Histograms are used Histograms are used to show the to show the frequencyfrequency of data. of data.

Very similar to bar Very similar to bar graphs, but use graphs, but use intervalsintervals on the X on the X axis.axis.

Bars do touch.Bars do touch.

Histograms have Histograms have a title.a title.

Histograms have Histograms have two axes (X and two axes (X and Y), which are Y), which are labeled.labeled.

HistogramHistogram

10

9

8

7

6

5

4

3

2

1

10-Jan 11-20 21-30 31-40 41-50 51-60 61-70 71-80 81-90 90-99

Fre

quen

cy

Test Scores

Class Test Scores

Bar GraphBar Graph The purpose of a The purpose of a

bar graph is to bar graph is to display and display and compare data. compare data.

Bar graphs use bars Bar graphs use bars to show the data.to show the data.

A bar graph must A bar graph must include: include:

- a title- a title

- labeled X and Y - labeled X and Y axesaxes

- equal intervals - equal intervals are used on the Y are used on the Y axis.axis.

- the bars are - the bars are evenlyevenly spaced spaced apart from each apart from each other.other.

Bar GraphBar GraphFavorite Subjects

010203040506070

Math Science Reading Social Studies

Subjects

Num

ber

of S

tude

nts

More Info

Double Bar Double Bar GraphGraph

Plant Growth

0

5

10

15

20

Week 1 Week 2 Week 3 Week 4

Weeks

Inch

es Light Dark

Line GraphLine Graph

A line graph is A line graph is used to illustrate used to illustrate change over time.change over time.

Line graphs need:Line graphs need:

- Title- Title

- Labeled X and - Labeled X and Y axesY axes

- Equal - Equal IntervalsIntervals

- Data - Data displayed by displayed by points connected points connected into lines. into lines.

Line GraphLine GraphTemperature For One Week

0102030405060708090

100

Day 1 Day 2 Day 3 Day 4 Day 5

Days of the Week

Deg

rees

Far

enhe

it

Double Line Double Line GraphGraph

Amount of Rainfall

0

1

2

3

4

5

May June July August

Months

Inch

es 1999

2000

Scatter PlotScatter Plot

Shows how closely Shows how closely two sets of data two sets of data are related.are related.

The closer the sets The closer the sets are related, the are related, the closer the points closer the points come to forming a come to forming a straight line.straight line.

Scatter Plots Scatter Plots include:include:

- title - title

- labeled axes- labeled axes

- equal intervals- equal intervals

- corresponding - corresponding numbers plotted numbers plotted as ordered pairs.as ordered pairs.

Scatter PlotScatter PlotStudy Time Versus Grades

00

20

40

60 80100

1 2 3 4Study Time in Hours

Grade * *** * * *

5