longterm test:

1 from sitter,  8 from wtb, 3 from rover (total N = 12)

mean(test): 0.248          SD(test): 0.7

Longterm test Control

1 from sitter, 2 from rover (N=3)

mean(test):-0.386           SD(test):0.79

Two Sample:

Based on 50%(20%) of statistical power, the minimum sample size is 7 (17)for both group.

One Sample (assume control group has the average of PI is 0):

Based on 50% (20%) of statistical power, the minimum sample size is 22 (49)for both group.

https://www.dssresearch.com/KnowledgeCenter/toolkitcalculators/samplesizecalculators.aspx

Self learning test:

sitter N=5

wtb N= 4