limitations of the results and any other qualifications (e.g., limitations to the validity of the conclusions
drawn);
date or period when the data were collected;
names and versions of tools used for performing statistical analysis;
number of observations from which conclusions are drawn;
sampling procedures that are used;
assumptions underlying the analysis techniques that are used, and the results of any sensitivity
analysis performed to check for robustness to violation of assumptions;
precisely how aggregates are performed (e.g., average or weighted average);
unit of observation about which conclusions are drawn (e.g., inspection package, configuration item);
how missing data and anomalies were dealt with, where applicable;
how outliers were dealt with during data analysis, where applicable;
how combining data across different data sets was performed, where applicable;
for any statistical tests, whether they are one or two sided;
for any statistical tests, the alpha levels used (amount of acceptable error);
for any statistical tests, how p values are calculated (the probability of getting the observed result or a
more extreme one by chance);
how confidence intervals are calculated, where applicable;
statistical methods used (including limits).