topic Re: Missing values in a significant variable during the modelling process in Statistical Procedures

Missing values in a significant variable during the modelling process

Shivi82 — Tue, 11 Nov 2014 14:21:14 GMT

Hi.

During the Modelling process, if we have selected some of the variables and we see that for one of the very significant variable the values are missing so is there a threshold or industry specified % for the variable to be kept in the model and ignore the missing values.

I understand that we can replace the missing values with either the mean or the median of the variable however wanted to see if statisitcally there is a threshold.

Regards, Shivi

Re: Missing values in a significant variable during the modelling process

stat_sas — Tue, 11 Nov 2014 14:58:40 GMT

Hi,

I think there is no standard threshold for variables with missing values to be considered for modeling. Normal practice is to drop a variable having 50% missing values. If you consider variable having 50% missing values is important for modeling, then you can create an indicator variable and use that instead.

Re: Missing values in a significant variable during the modelling process

Shivi82 — Tue, 11 Nov 2014 15:12:41 GMT

thank you.