Ordinal Data

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# Ordinal Data - PowerPoint PPT Presentation

Ordinal Data. Sarah Medland. What about more than 2 categories?. Very similar We create a matrix containing the 1 st threshold and the displacements between subsequent matrices We then add the 1 st threshold and the displacement to obtain the subsequent thresholds. 2.2. -1. 1.2. 3.

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### Ordinal Data

Sarah Medland

What about more than 2 categories?
• Very similar
• We create a matrix containing the 1st threshold and the displacements between subsequent matrices
• We then add the 1st threshold and the displacement to obtain the subsequent thresholds

2.2

-1

1.2

3

-3

0

Mx Threshold Specification: 3+ Cat.

Threshold matrix: T Full 2 2 Free

Twin 1 Twin 2

1st threshold

increment

2.2

-1

1.2

3

-3

0

Mx Threshold Specification: 3+ Cat.

Threshold matrix: T Full 2 2 Free

Twin 1 Twin 2

1st threshold

increment

MxAlgebraL%*%T

2.2

-1

1.2

3

-3

0

Mx Threshold Specification: 3+ Cat.

Threshold matrix: T Full 2 2 Free

Twin 1 Twin 2

1st threshold

increment

MxAlgebraL%*%T

2nd threshold

Two approaches to the liability threshold model
• Solution?