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**correlation analysis**Jan 31, 2013 10:01 AM | Lorna Garcia Penton

correlation analysis

Dear NBS experts,

I was wondering if I could get some help with the creation of the design matrix for a regression analysis with the NBS. I have been trying many ways but I don't know which is correct. I have one group and 2 variables (A, B); at first I modelled the global mean and the two variables together, in this way (Mean A B):

1 0 10

1 0 10

1 0 8

1 0 10

1 0 9,25

1 0 10

1 3 9,25

1 1 8,50

1 0 9,50

1 0 10

1 0 9

1 0 9

1 0 10

1 2 10

1 0 8,50

1 0 8,25

1 0 7

1 0 10

1 0 10

1 0 8

1 0 10

1 0 9,25

1 0 10

1 3 9,25

1 1 8,50

1 0 9,50

1 0 10

1 0 9

1 0 9

1 0 10

1 2 10

1 0 8,50

1 0 8,25

1 0 7

1 0 10

1 0 7,75

1 2 9

1 5 9

1 6 8,75

1 6 7,25

1 5 7,25

1 8 9

1 14 8

1 9 8,25

1 4 8

1 10 7

1 3 7,25

1 3 9

1 3 8

1 8 9

1 4 7

1 3 7

1 5 9

1 3 6,75

1 5 7

1 5 7,75

1 6 10

I couldn't get any significant correlation but if I remove the mean something became significant. Then I also modelled both variables separated because I presume that they are correlated. I just want to know which is the correct design to test correlations in the NBS toolbox and if I can set contrasts for both the negative and the positive correlation, n this way for the example before:

[0 -1 0] [0 1 0]

[0 0 -1] [0 0 1]

And the last question, sorry, Do I have to set in the 'Statistical Test': One Sample?

Thanks in advance for your help,

Lorna.

I was wondering if I could get some help with the creation of the design matrix for a regression analysis with the NBS. I have been trying many ways but I don't know which is correct. I have one group and 2 variables (A, B); at first I modelled the global mean and the two variables together, in this way (Mean A B):

1 0 10

1 0 10

1 0 8

1 0 10

1 0 9,25

1 0 10

1 3 9,25

1 1 8,50

1 0 9,50

1 0 10

1 0 9

1 0 9

1 0 10

1 2 10

1 0 8,50

1 0 8,25

1 0 7

1 0 10

1 0 10

1 0 8

1 0 10

1 0 9,25

1 0 10

1 3 9,25

1 1 8,50

1 0 9,50

1 0 10

1 0 9

1 0 9

1 0 10

1 2 10

1 0 8,50

1 0 8,25

1 0 7

1 0 10

1 0 7,75

1 2 9

1 5 9

1 6 8,75

1 6 7,25

1 5 7,25

1 8 9

1 14 8

1 9 8,25

1 4 8

1 10 7

1 3 7,25

1 3 9

1 3 8

1 8 9

1 4 7

1 3 7

1 5 9

1 3 6,75

1 5 7

1 5 7,75

1 6 10

I couldn't get any significant correlation but if I remove the mean something became significant. Then I also modelled both variables separated because I presume that they are correlated. I just want to know which is the correct design to test correlations in the NBS toolbox and if I can set contrasts for both the negative and the positive correlation, n this way for the example before:

[0 -1 0] [0 1 0]

[0 0 -1] [0 0 1]

And the last question, sorry, Do I have to set in the 'Statistical Test': One Sample?

Thanks in advance for your help,

Lorna.

## Threaded View

Title | Author | Date |
---|---|---|

Lorna Garcia Penton |
Jan 31, 2013 | |

Andrew Zalesky |
Jan 31, 2013 | |

jules_ozark |
Jan 12, 2022 | |

Andrew Zalesky |
Jan 13, 2022 | |

Lorna Garcia Penton |
Feb 1, 2013 | |