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Latest Discussions

• Updating Charts and Tables in a Custom Display Window using JSL

  I recently built a script to create a TOPSIS multi-attribute decision making analysis on some of my data to help pick the best case. The actual calculations are fairly basic from a mathematic perspective, and they work just fine. I built a window to display some information about the data I am working with, the importance weightings used in the calculations in bar chart form, a scatterplot matrix ...

  

  Discussions |

  Apr 6, 2009 4:09 PM

  11689 views | 5 replies

• Least squares regression - removing insignificant terms quickly?

  Hi all-
  
  I am doing least squares fits, up to cubic with 15 X's. Only the 1st several ever turn out "significant", so those at the "bottom" with small p values could be removed...one at a time...as long as R^2 doesn't go down. This would be a slow iterative process, but would result in a much shorter equation. I know of one other tool that will do this.
  
  Can JMP?
  
  Thanks,
  Dave

  

  Discussions |

  Apr 6, 2009 5:38 AM

  11513 views | 10 replies

• One-tail vs. Two-tail tests

  Hi,
  
  I am doing the means comparison using one-way ANOVA in Jmp. When I look at the detailed report, I see the p-values for both one-tail and two-tail t-tests.
  However, the comparison circles seem to display according only to the two-tail confidence levels. The same about LSD (least significant difference) - it is calculated only for the two-tailed test.
  
  Question: can I change it somewhere so that one...

  

  Discussions |

  Apr 1, 2009 1:22 PM

  12421 views | 10 replies

• extract year from a mdy variable

  I have variable collection.date, in m/d/y format, and I want to create another variable, yr, by extracting year from collection.date. I have tried using the year function in a formula but haven't had any success. Any suggestions?
  Thanks,
  mgm

  

  Discussions |

  Apr 1, 2009 6:19 AM

  3879 views | 1 replies

• If column exists?

  Hi-
  
  Would like to write a simple statement in script like,
  
  If column_name exists then
  do stuff
  End If
  
  Is it possible?
  
  Dave

  

  Discussions |

  Mar 31, 2009 1:32 PM

  4509 views | 1 replies