quartile

  1. armyprof

    About box plots...

    Sigh. Working with a client who wanted benchmarking data on one of our surveys we did. So, we went to an external provider who has access to lots of survey data. He did the comparison for us, but because he uses surveys with the same question but on different scales, what we got back is...
  2. K

    SigmaPlot Boxplots

    Hi all, New here and hoping someone might be able to help (with what is a potentially stupid/obvious question--so apologies if that is the case). I am trying to make some boxplots on SigmaPlot, however I have realized the calculation they use to compute the quartiles, as well as the whisker...
  3. kiton

    "Quartile" Regression

    Hello dear forum members, I am conducting a replication study based on the paper by Gao, G. G., Greenwood, B. N., Agarwal, R., & McCullough, J. S. (2015). VOCAL minority and silent majority: How do online ratings reflect population perceptions of quality. MIS Quarterly: Management Information...
  4. J

    SPSS Transforming data

    Hi everyone, Can anyone help me with a variable transformation problem on SPSS? I'm trying to transform variable into a new variable in order to reverse the scores. At the moment 0 = no distress and 4 = high distress, but I want to reverse the values to match the scoring direction of...
  5. L

    Comparing the mean of top and bottom quartiles

    Hi everyone, I am going over my research and I did an analysis of the mean of 6 variables on two quartiles drawn from a particular variable. I basically assigned to each observation its corresponding quartile and then I focused on the top and the bottom ones. I did a t-test to compare the...
  6. S

    Find standard error from mean and upper/lower quartile?

    Hi folks, I'm hoping there's a straightforward answer to this (that isn't "no") :tup: For some data I know the mean, the upper and lower quartile figure, and also the number of observations on which it is based. I would like to know the standard error. Is there a way of working this...