Matching two datasets baStatistical analysis is most applied in what part of the Shewhart / Deming quality improvement cycle? Group of answer choices Plan Act Check Dosed on What kind of variable is the following 3-level glucose variable: Normal glucose, pre-diabetes, diabetes. Select the best answer. Group of answer choices Quantitative Ordinal Categoricala key variable in common to both of them, such as medical record number, is called ____. Group of answer choices random sampling data linking T-tests stratified sampling None of the above