Interpretation GLM Interaction Plot - especially the dots

Christoph_Alwin — Wed, 15 Feb 2017 15:05:05 GMT

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

Re: Interpretation GLM Interaction Plot - especially the dots

ballardw — Wed, 15 Feb 2017 16:05:31 GMT

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.

Re: Interpretation GLM Interaction Plot - especially the dots

Christoph_Alwin — Thu, 16 Feb 2017 08:06:15 GMT

Thanks, ballardw

topic Re: Interpretation GLM Interaction Plot - especially the dots in Graphics Programming

Interpretation GLM Interaction Plot - especially the dots

Re: Interpretation GLM Interaction Plot - especially the dots

Re: Interpretation GLM Interaction Plot - especially the dots