C784 STATISTICS FULLCOURSE REVIEW EXAM | QUESTIONS & 100% VERIFIED ANSWERS | LATEST UPDATE | PASSED

C784 STATISTICS FULLCOURSE REVIEW EXAM | QUESTIONS & 100% VERIFIED ANSWERS | LATEST UPDATE | PASSED Lurking Variable Correct Answer: Associated with the explanatory and the response variables that is not directly being studied. Simpson's Paradox Correct Answer: Occurs when a trend or result that appears in groups of data disappears when we combine the data. Regression Analysis Correct Answer: A process for estimating and analyzing the relationship between variables. Least-Squares Regression Line Correct Answer: AKA the line of best fit. y = mx + b "rise over run" 2 Interpolation Correct Answer: Using existing data along with the Least-Squares Regression Line to make a prediction. Extrapolation Correct Answer: Estimation by projecting OUTSIDE known data points. p-value Correct Answer: the probability that a result occurred by chance Significance Levels in Hypothesis Testing Correct 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 Correct 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 3 99.7% is w/in 1 standard deviation of the mean Used for Categorical (Qual) Data Correct Answer: Bar Chart Pie Chart Mean Correct Answer: Average - adding series then dividing by the total number in that series Center & Spread Measures Correct Answer: SYMMETRIC - Mean (center) / Standard Deviation (spread) SKEWED - Median (center) / IQR (spread) CATEGORICAL - Mode (center) / no spread What is the difference between a bar chart and a histogram? Correct Answer: BAR CHART - Categorical data distributed over groups of categories HISTOGRAM - Quantitative data distributed over various intervals Outlier Formul