Empirical rule 68 - Study guides, Class notes & Summaries

Lurking Variable : Associated with the explanatory and the response variables that is not directly being studied. Simpson's Paradox : Occurs when a trend or result that appears in groups of data disappears when we combine the data. Regression Analysis : A process for estimating and analyzing the relationship between variables. Least-Squares Regression Line : AKA the line of best fit. y = mx + b "rise over run" 2 | P a g e Interpolation : Using existing data along with the L...

C207 The mean of 100 bank customers waiting times for teller service is 5.8 minutes with a C207 The mean of 100 bank customers waiting times for teller service is 5.8 minutes with a standard deviation of 1.5.  What time range would represent a 95.4% probability customer waiting time? To find the time range that represents a 95.4% probability customer waiting time, we can use the concept of standard deviation and the empirical rule (also known as the 68-95-99.7 rule). The empirical rule state...

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...

ISDS 361A Final Exam Concept Questions and Answers uses all the data (the most efficient) ANSWER Standard deviation Probability ANSWER likelihood that a particular event will occurlikelihood that the random variable takes values within a particular range. coefficient of variation formula ANSWER standard deviation/mean coefficient of variation ANSWER A measure of relative variability computed by dividing the standard deviation by the mean and multiplying by 100. if the mean order d...

The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.21 minutes and a standard deviation of 1.90. Find the probability that a randomly selected individual will take less than 6 minutes to select a shoe purchase. Is this outcome unusual? correct answers Probability is 0.12, which is usual as it is not less than 5% In a health club, research shows that on average, patrons spend an average of 42.5 minutes on the treadmill, with a standard d...

C207 The following is a graph of a normally distributed data set with a mean of  10 and a C207 The following is a graph of a normally distributed data set with a mean of  10 and a standard deviation of 2. What is the probability that a randomly selected event from the data set will be between 8 and 12? In a normal distribution, the probability of an event occurring within one standard deviation of the mean is approximately 68.2%. Here's how we arrive at this: ï‚·The mean of the data ...

To describe categorical data... correct answer: Make a picture. Bar graphs or pie charts work well. Summarize the distribution with a table of counts or relative frequencies (percents) in each category. Compare distributions with plots side by side. Interpret Standard Deviation correct answer: Standard deviation measures spread by giving the "typical" or "average" distance that the observations (context) are away from their (context) mean. Outlier Rule correct answer: Upper Bound ...

Math 202 : Probability and Statistics Final Test Prep, Probability and Statistics Final Test Prep | Questions and Correct Answers | Latest Update 2024/2025 | 100% Pass Statistical Significance When your discovered p-value is less than your alpha (.05 if not given). States that chance alone would rarely produce an equally extreme result. Non-Response Bias A bias caused by a number of people who did not respond to the survey. p-ValueThe probability of getting a result at least as extr...

Exam Prep (McKissock) Questions with correct Answers What does not include physical mobility, but rather the control and possession of all the rights of ownership? Purchasing Power If an appraiser is valuing real property by sales comparison, whose actions is he or she LEAST likely to consider? Government Agencies Which value characteristic implies the presence of a need or demand, which considers the monetary power to fill that need? Desire The rights and benefits inher...

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...