topic Re: splitting data into three group in SAS Programming

splitting data into three group

jazzy — Sun, 16 Jul 2017 00:43:56 GMT

I have variable size having more than 1000 values. I want to create a group of (low, medium, high) on the basis of size values. so whole size will be divided into 3 groups. top 1 are high then medium and low.

in this example data it is shown that there are 9 values. Top3 are in high group, having values in the middle level 3 values are in medium group then lowest 3 are in low group. So my intention is to create this group variable.

Size group

10 low

20 low

50 low

50 medium

70 medium

80 Medium

95 high

99 high

Re: splitting data into three group

Reeza — Sun, 16 Jul 2017 00:48:49 GMT

Are those the only values you'll see in the dataset? Or are there ranges of the variables?

One quick way is to use PROC RANK which will use percentiles, ie bottom 1/3 will be low by percentiles, top 1/3 will be high using a percentile. Rank will use a 0/1/2 to create the groups and you can rename them if desired.

proc rank data=have out=want groups=3;
var size;
ranks rank_size;
run;

@jazzy wrote:

I have variable size having more than 1000 values. I want to create a group of (low, medium, high) on the basis of size values. so whole size will be divided into 3 groups. top 1 are high then medium and low.

in this example data it is shown that there are 9 values. Top3 are in high group, having values in the middle level 3 values are in medium group then lowest 3 are in low group. So my intention is to create this group variable.

Size group

10 low

20 low

50 low

50 medium

70 medium

80 Medium

95 high

99 high

99 high

Re: splitting data into three group

jazzy — Sun, 16 Jul 2017 00:52:30 GMT

Thank. There are ranges of variables.
I think this will work for my requirement.