§ 83.03 – What sample ratio should I use for the APTL option?

(a)    You must use the sample APTL as the sample ratio.

(b)   Use sample APTL by type of service days for estimating average daily PMT by type of service days.  If your sample happens not to include service unit for a particular day type (e.g., Saturday), use the sample APTL for the entire sample for this day type. 

(c)    For estimating annual total PMT:

(1)   Use sample APTL for the entire sample if you do not group your service.

(2)   Use sample APTL for each group if your sampling plan is based on grouping and you have reliable 100% counts of UPT by service group and have entered information into the template accordingly in developing your current period-based template sampling plan.  Refer to cell M52 of the PeriodInput Worksheet in the template you used in developing your current period-based template sampling plan, and it should be 1.

(3)   Use weighted sample APTL for the entire sample if your sampling plan is based on grouping but you do not have reliable 100% counts of UPT by service group and you have entered information into the template accordingly in developing your current period-based template sampling plan.  Refer to cell M52 of the PeriodInput Worksheet in the template you used in developing your current period-based template sampling plan, and it should be 0.