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- ANOVA or MANOVA for CRD and RCBD analysis with r...

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Oct 24, 2017 10:04 PM
(1195 views)

When we have repeated measures for different time points (with replicates), What is perfect to use analyze data in JMP to answer? ANOVA or MANOVA?

1.Overall, are there significant differences between TIME points? for repeated measurements in CRD (e.g. data) and RCBD (e.g. data) designs? Not the subsampling data.

2.Do the two groups differ at any time points, i.e. is there a TREATMENT effect?

3.Do the two groups differ in their responses over time, i.e is there a TIME*TREATMENT interaction?

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Nov 13, 2017 9:14 AM
(2007 views)

Solution

Try stacking your Rep column and use the Variability plot to look at the data.

```
Variability Chart(
Y( :Data ),
X( :Harvest, :Lime Trt. ),
Model( "Crossed" ),
Max Iter( 100 ),
Conv Limit( 0.00000001 ),
Number Integration Abscissas( 128 ),
Number Function Evals( 65536 ),
Connect Cell Means( 1 ),
Show Group Means( 1 ),
Std Dev Chart( 1 ),
Points Jittered( 1 ),
Variance Components( 1 ),
)
```

JMP Systems Engineer, Pharm and BioPharm Sciences

1 REPLY

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Nov 13, 2017 9:14 AM
(2008 views)

Try stacking your Rep column and use the Variability plot to look at the data.

```
Variability Chart(
Y( :Data ),
X( :Harvest, :Lime Trt. ),
Model( "Crossed" ),
Max Iter( 100 ),
Conv Limit( 0.00000001 ),
Number Integration Abscissas( 128 ),
Number Function Evals( 65536 ),
Connect Cell Means( 1 ),
Show Group Means( 1 ),
Std Dev Chart( 1 ),
Points Jittered( 1 ),
Variance Components( 1 ),
)
```

JMP Systems Engineer, Pharm and BioPharm Sciences