§ 77.03 – What sample average should I use for bus services?

(a)    The unit of sampling and measurement you have chosen for your sampling plan determines the sample average you should use. 

(b)   While you could have chosen any unit of sampling measurement for your sampling plan, it most likely is in one-way bus trips or in round-trip bus trips.

(c)    Assuming that your unit of sampling and measurement is in one-way bus trips, Table 77.01 shows the sample averages you should use.

(d)   If your sample happens not to include any one-way bus trips for a particular day type (e.g., Saturday), use the sample average for the entire sample. 

Table 77.01.  Sample Averages for Bus Services

If the service-consumed measure is

and if the measure is

and if your sampling plan is

then you should calculate the following sample average

UPT

for annual total

not based on grouping

UPT/one-way car trip

based on grouping

UPT/one-way car trip by group

for daily average

 

UPT/one-way car trip by type of service days

PMT

for annual total

not based on grouping

PMT/one-way car trip

based on grouping

PMT/one-way car trip by group

for daily average

 

PMT/one-way car trip by type of service days