# grouped data

1. ### Can iterative PCA be applied to grouped data?

My data set consist of 156 individuals with fifteen variables. The variables consist of one body mass (dependent) variable and fourteen (independent) variables of different bird bone dimensions (of one type of bone). The 156 individuals can be divided over 30 bird species, where some groups of...
2. ### 'Likert' package plotting

Hi everyone I've been using the 'Likert' package for a while and find it pretty good. One thing I haven't been able to resolve is how to explicitly specific the order of the grouped variables. Specifically, I have grouped my data by two time periods (month 1 and month 2), and the default is...
3. ### Grouping Cases on SPSS by Date

Hi, I am trying to come up with some syntax for the following query but have so far been unsuccessful. Example Table: Person DateSpec Primary Record Person1 24/05/2015 1 Person1 02/06/2016 0...
4. ### Matrix Multiplication + Save Result by group

Bonjour a tous, I'm trying to achieve the following multiplication VAR = W*S*W' w: [n,1] S: [n,n] s: [n,1] I have the following variables in Stata: date W s In my case, S is a square matrix [n,n] with 1 in the diagonal and a constant (per period) "s" in the diagonal. The...
5. ### group & categoryorder interaction problem with proc sgplot vbar

I am using SGPLOT to create a VBAR graph that needs to be in order AND grouped (ie bars are color-coded, not grouped adjacently), but I am having problemx when I use both GROUP and GROUPORDER or CATEGORYORDER together. Here is my code: ************ proc sort data=streams; by bugpc1; run...
6. ### how to calculate median of grouped data if group size is variable

I learned in school that Median = L + (n/2-cf)*h/f where L = lower limit of median class n = no. of observations cf = cumulative frequency of class preceding the median class, f = frequency of median class, h = class size (assuming class size to be...
7. ### [Statistica / Statgraphics] - Can grouped data be analyzed?

I have many datasets consisting of grouped data -- no individual cases, only frequencies (# of cases) in each class (some open-ended upper classes). Can such data even be entered in Statistica or Statgraphics? Can it be analyzed? I can find no reference to grouped data in the help files of...