WGU C784 Applied Healthcare Statistics Exam – Complete Questions & Answers (100% Correct)

WGU C784 Applied Healthcare Statistics Exam – Complete Questions & Answers (100% Correct) WGU C784 Applied Healthcare Statistics Exam – Complete Questions & Answers (100% Correct) Lurking Variable - ANSWER - Associated with the explanatory and the response variables that is not directly being studied. Simpson's Paradox - ANSWER - Occurs when a trend or result that appears in groups of data disappears when we combine the data. Regression Analysis - ANSWER - A process for estimating and analyzing the relationship between variables. Least-Squares Regression Line - ANSWER - AKA the line of best fit. y = mx + b "rise over run" Interpolation - ANSWER - Using existing data along with the Least-Squares Regression Line to make a prediction. Extrapolation - ANSWER - Estimation by projecting OUTSIDE known data points. p-value - ANSWER - the probability that a result occurred by chance Significance Levels in Hypothesis Testing - ANSWER - Statistically Significant: If a measured p-value is less than the significance level. NOT Statistically Significant: If a measured p-value is MORE than the significance level. Empirical Rule - ANSWER - 68 - 95 - 99.7 68% is w/in 1 standard deviation of the mean 95% is w/in 1 standard deviation of the mean 99.7% is w/in 1 standard deviation of the mean Used for Categorical (Qual) Data - ANSWER - Bar Chart Pie Chart Mean - ANSWER - Average - adding series then dividing by the total number in that series