Data visualization with SAS programming

Interpretation GLM Interaction Plot - especially the dots

Accepted Solution Solved
Reply
New Contributor
Posts: 2
Accepted Solution

Interpretation GLM Interaction Plot - especially the dots

Hi, community,

 

I'm running SAS 9.3 on 32 bit-System.

I have the following interaction plot - thrown out by

 

ods graphics on;
TITLE2 'paarweise Differenzierung der Höhenmittel 2015'; TITLE3 'Model Höhe = Herkunft Wiederholung (&Interaktion) / ss3';
PROC GLM DATA=beta;
    BY VFL; CLASS hk wdh;
    model mh=hk wdh /ss3;
    lsmeans hk / adjust=tukey pdiff=all;
    RUN; QUIT;
ODS graphics off;

 

Part of the Output, while the model is significant, is the attached graphic (in the html-output).

 

My research for the meaning of the dots and circles are resultless yet. Is there someone, who can tell?

The data set has three values for each class of hk.

 

Thx to helpful readers!

Christoph_Alwin

 

data example:

Wdh      HK          VFL        mh

1             1             12           11.9891

1             3             12           12.6261

1             4             12           11.7111

1             5             12           12.3704

1             6             12           12.1714

1             21           12           11.9086

1             7             12           11.656

1             8             12           11.248

1             9             12           11.322

1             11           12           12.3973

1             13           12           11.5538

1             14           12           11.7488

1             16           12           12.188

1             17           12           11.5387

1             19           12           11.1318

1             20           12           11.3882

2             1             12           11.1585

2             3             12           13.1

2             4             12           12.27

2             5             12           12.26

2             6             12           12.3529

2             21           12           12.4622

2             7             12           10.9118

2             8             12           11.0143

2             9             12           11.871

2             11           12           11.5024

2             13           12           12.0889

2             14           12           11.3424

2             16           12           11.0917

2             17           12           11.2925

2             19           12           11.2895

2             20           12           12.1375

3             1             12           11.8188

3             3             12           12.7313

3             4             12           12.2667

3             5             12           11.8

3             6             12           12.2

3             21           12           12.1795

3             7             12           12.8733

3             8             12           11.275

3             9             12           12.3308

3             11           12           12.4059

3             13           12           12.0263

3             14           12           12.2895

3             16           12           13.0231

3             17           12           11.7345

3             19           12           11.175

3             20           12           11.2643

Attachment

Accepted Solutions
Solution
‎02-16-2017 03:05 AM
Grand Advisor
Posts: 9,748

Re: Interpretation GLM Interaction Plot - especially the dots

The circle, cross and x are a scatter plot of the original values you supplied. Each symbol represents one level of the variable WDH.

The solid line graph represents the modeled value of the circle, or first level of WDH.

The simple dashed line is associated with cross and the second level of WDH.

The long-short dashed line is associated wth X and third level of WDH.

View solution in original post


All Replies
Solution
‎02-16-2017 03:05 AM
Grand Advisor
Posts: 9,748

Re: Interpretation GLM Interaction Plot - especially the dots

The circle, cross and x are a scatter plot of the original values you supplied. Each symbol represents one level of the variable WDH.

The solid line graph represents the modeled value of the circle, or first level of WDH.

The simple dashed line is associated with cross and the second level of WDH.

The long-short dashed line is associated wth X and third level of WDH.

New Contributor
Posts: 2

Re: Interpretation GLM Interaction Plot - especially the dots

Thanks, ballardw
Post a Question
Discussion Stats
  • 2 replies
  • 67 views
  • 1 like
  • 2 in conversation