Scatterplots - Bama.ua.edu

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An Interactive Tutorial for SPSS 10.0 for Windows©
Creating Scatterplots
by
Julia Hartman
Next
© Copyright 2000, Julia Hartman
1
Scatterplots:
Introduction
A scatterplot may help you to
understand how well linear regression
fits your data. You may find that a
quadratic equation would be more
appropriate than a linear one.
Next
© Copyright 2000, Julia Hartman
2
Scatterplots :
Introduction
Variables
 totcum: Undergraduate GPA (Total Cumulative)
 nmtot1: MCAT Total 1992-present, most recent
 usmle2: USMLE Step 2
Next
© Copyright 2000, Julia Hartman
3
Scatterplots :
Starting the Procedure
• In the menu, click
Graphs
© Copyright 2000, Julia Hartman
4
Scatterplots:
Starting the Procedure
• In the menu, click
Graphs
• Point to Scatter…
© Copyright 2000, Julia Hartman
5
Scatterplots:
Starting the Procedure
• In the menu, click
Graphs
• Point to Scatter…
…and click.
© Copyright 2000, Julia Hartman
6
Scatterplots:
Selecting the Type of Scatterplot
This tutorial demonstrates
a plot of 3 continuous
variables, so first click the
button for 3-D.
© Copyright 2000, Julia Hartman
7
Scatterplots:
Selecting the Type of Scatterplot
This tutorial demonstrates a
plot of 3 continuous
variables, so first click the
button for 3-D.
Then click the Define
button.
© Copyright 2000, Julia Hartman
8
Scatterplots:
Selecting Variables
Scroll down the
variable list,
© Copyright 2000, Julia Hartman
9
Scatterplots:
Selecting Variables
Scroll down the
variable list,
point to the variable
labeled
UNDERGRAD GPA
TOTAL - CUMULATIVE
© Copyright 2000, Julia Hartman
10
Scatterplots:
Selecting Variables
Scroll down the
variable list,
point to the variable
labeled
UNDERGRAD GPA
TOTAL - CUMULATIVE
…and click.
© Copyright 2000, Julia Hartman
11
Scatterplots:
Selecting Variables
Move totcum to the
box labeled X Axis:
by clicking the arrow.
© Copyright 2000, Julia Hartman
12
Scatterplots:
Selecting Variables
A few variables down
the list, point to nmtot1,
which is labeled
MCAT TOTAL 1992PRESENT, MOST RECENT
© Copyright 2000, Julia Hartman
13
Scatterplots:
Selecting Variables
A few variables down
the list, point to nmtot1,
which is labeled
MCAT TOTAL 1992PRESENT, MOST RECENT
…and click.
© Copyright 2000, Julia Hartman
14
Scatterplots:
Selecting Variables
Move nmtot1 to the
box labeled
Z Axis: by clicking the
arrow.
© Copyright 2000, Julia Hartman
15
Scatterplots:
Selecting Variables
Scroll further down
the list and point to
the variable usmle2,
which is labeled
USMLE STEP 2,
© Copyright 2000, Julia Hartman
16
Scatterplots:
Selecting Variables
Scroll further down
the list and point to
the variable usmle2,
which is labeled
USMLE STEP 2 TOTAL,
© Copyright 2000, Julia Hartman
17
Scatterplots:
Selecting Variables
Scroll further down
the list and point to
the variable usmle2,
which is labeled
USMLE STEP 2 TOTAL,
…and click.
© Copyright 2000, Julia Hartman
18
Scatterplots:
Selecting Variables
Move usmle2 to the
box labeled
Y Axis: by clicking the
arrow.
© Copyright 2000, Julia Hartman
19
Scatterplots:
Selecting Variables
Click the OK button to
produce the scatterplot.
© Copyright 2000, Julia Hartman
20
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