Rank Method
Select the ranking method to be used. Leave this field empty for conventional ranking (from 1 to number of observations).
The following table describes each of the options:
|
Option |
Definition |
|
FRACTION |
Computes fractional ranks by dividing each rank by the number of observations having nonmissing values of the ranking variable. |
|
GROUPS |
Assigns group values ranging from 0 to number-of-groups minus 1. Common specifications are GROUPS=100 for percentiles, GROUPS=10 for deciles, and GROUPS=4 for quartiles. For example, GROUPS=4 partitions the original values into four groups, with the smallest values receiving, by default, a quartile value of 0 and the largest values receiving a quartile value of 3. Note: The number of groups is specified in the Number of Groups for Rank Method GROUPS option. |
|
NORMAL=BLOM |
Computes normal scores from the ranks using the Blom equation. |
|
NORMAL=TUKEY |
Computes normal scores from the ranks using the Tukey equation. |
|
NORMAL=VW |
Computes normal scores from the ranks using the van der Waerden equation. |
|
NPLUS1 |
Computes fractional ranks by dividing each rank by the denominator n+1, where n is the number of observations that have nonmissing values of the ranking variable. |
|
PERCENT |
Divides each rank by the number of observations (n) that have nonmissing values of the variable and multiplies the result by 100 to get a percentage. n is the number of observations that have nonmissing values of the ranking variable. |
|
SAVAGE |
Computes Savage (or exponential) scores from the ranks. |
For more detail on each of these methods, refer to the Base SAS Documentation regarding the PROC RANK statement.
To Select a Ranking Method:
| 8 | Choose one of the options from the drop-down list. |
