WGU C784 Applied Healthcare Statistics – Full-
Length Practice Exams with Verified A+
Responses (2025/2026)
Ratio - Continuous data with a unique zero point
Interval - Orders data at equal distance apart
Ordinal - Place qualitative objects in some kind of order
Nominal - Identify, group, or categorize
What is the process of quality control? - Reduce/minimize errors
Out of range - Outliers create this type of error
Unpredictable error - Random Error - No correlation
Error may occur from missing data - Omission error - distorted results
blind study - a study in which the subjects don't know if they are getting the treatment
or the placebo
Median - Middle score for a set of data (if there is an even number, take two middle
scores and average them)
Z score - The number of standard deviations a value (x) is above or below the mean set
of numbers.
z score formula - take the x value and subtract the mean and then divide by the
standard deviation
If the average is the same for two groups, what will determine their difference? -
Variance (standard deviation)
Mean - Average
Multiplication - Apply this rule when looks for two events occurring (AND)
Addition - Use this rule when looking for one of the other event happening (OR)
Combination - The order you pick your sample in does not matter
Length Practice Exams with Verified A+
Responses (2025/2026)
Ratio - Continuous data with a unique zero point
Interval - Orders data at equal distance apart
Ordinal - Place qualitative objects in some kind of order
Nominal - Identify, group, or categorize
What is the process of quality control? - Reduce/minimize errors
Out of range - Outliers create this type of error
Unpredictable error - Random Error - No correlation
Error may occur from missing data - Omission error - distorted results
blind study - a study in which the subjects don't know if they are getting the treatment
or the placebo
Median - Middle score for a set of data (if there is an even number, take two middle
scores and average them)
Z score - The number of standard deviations a value (x) is above or below the mean set
of numbers.
z score formula - take the x value and subtract the mean and then divide by the
standard deviation
If the average is the same for two groups, what will determine their difference? -
Variance (standard deviation)
Mean - Average
Multiplication - Apply this rule when looks for two events occurring (AND)
Addition - Use this rule when looking for one of the other event happening (OR)
Combination - The order you pick your sample in does not matter
