combining variables

  1. N

    How can I combine these variables into a new one

    I need to create a new variable from two. The first one is an ordinal variable called Professional Bachelor Office Management, and has 3 values: 0= doesn't apply, 1=BA1, 2=BA2, 3=BA3, the second one is also an ordinal variable called Professional Bachelor Business Management, and has as values...
  2. P

    Combining variables prior to performing regression analysis

    Hello to all. I am running a regression analysis to evaluate if the joint analysis of costs and benefits can explain medicinal plant selection better than only benefits. My 'benefit' variables are 'perceived efficiency' and 'perceived taste' and my 'cost' variable is 'difficulty of acquisition'...
  3. C

    Help with derivation of probability density of {event generation} & {event detection}

    I would like to specify a new probability distribution that relates to an event of size M being produced by some process and subsequently detected. Some assumptions : 1) If the event is detected there is no loss of information regarding its size. 2) There are no false detections - An...
  4. M

    Combinatorics in Stata 12

    Hi, I am trying to generate new variables in a stata dataset which includes all pairwise and triplets combinations of a count of 14 conditions. The conditions are listed as values in one variable 'chrondis' 1 to 14. chrondis | Freq. Percent Cum...
  5. J

    collapsing several variables into groups

    Hi all, sincere apologies if this has been covered in the forum - I searched but perhaps did not use the correct keywords? I have also *oogled my query and consulted my textbooks so I promise I'm not being lazy (thick, possibly - but not intentionally lazy!). Anyway, my question is this: I...