class

  1. K

    changing the reference variable value in class statement

    Hi, I am trying to run an analysis with the variable "histgr" (for histology group) and the values for histgr are 1, 2, 3, 4 and 5. How can I change the reference variable value from 5 (the last value and default reference) to 3 (my desired reference variable value)? Here is the code I have...
  2. W

    Do I need this variable in the class statement? And IRRs

    I am trying to calculate incidence rate ratios and 95% CIs for the interaction between two variables: area and time. My variables are n, area, period, and age (using log of population as the offset). I have two questions that tie together for the code I am using, which is: proc genmod...
  3. K

    Project Idea - Intro Statistics Class

    I'm a freshman in college now and I'm taking an intro statistics course. We have a final project for this class, and we need to decide on our own topic. Also, we must collect the data ourselves and cannot use published data(such as stock prices, etc.) Could anyone give me some interesting ideas...
  4. J

    New member here. Any recs for a 1-2 college unit online statistics course?

    Thanks for having me. I have five units of statistics (4 Intro to Probability & Statistics, 1 SAS Programming) and am looking for an online course I can take right away that offers one (maybe two) semester hour(s) of statistics. I've scoured this forum and the internet and have found the...
  5. S

    confused about the class interval

    hey, first of all - im from germany, sry if my english is not perfect :) ive got a problem with the class intervals... a little example: A set of data consists of 230 observations between $235 and $567. What class interval would you recommend? So i would refer to the “2 to the k...