missing data analysis

  1. M

    Syntax for replacing missing values with the Mean of Participants other scores

    Hi. I have a set of likert scales where on some items my participants have selected 'PFNTS' my Phd supervisor has said that as long as more than 50% of the data points in a scale are there then I can calculate the mean of those scores and use them to populate those missing data points. If there...
  2. S

    Help***SAS - Fill missing value with the last non missing value variable

    Hi, I wanted to fill missing value with the last non missing value variable. +----------+--------+-------+ | Variable | Level | Value | +----------+--------+-------+ | | men | 10 | |sexe | female | 20 | | | 0-20 | 5 | |...
  3. A

    Missing Data

    Hi :wave:, I have a database that I am using data imputation techniques, but is not a normal matrix to apply a multivariate normal test, my question is "I can apply Little's test to this data? :confused:" this to find the pattern of data loss (MAR, MCAR and MNAR :D ) Thank's I will wait...
  4. S

    Missing Data Analysis Question

    Hi gurus, I really appreciate some advise on handling missing values. Briefly, subjects rated 21 objects (obj 1 ...obj 21) on 14 attributes (attr1...attr14). Given the size of the questionnaire (21*14), we split the questionnaire into two parts: N1 (about 150) subjects rated Obj1..Obj11...