Wpc 300 test - Study guides, Class notes & Summaries

WPC 300 Final Exam Review (2024) || Questions & Answers (Graded A+) WPC 300 Final Exam Review (2024) || Questions & Answers (Graded A+) What does R^2=0.694 mean? - ANSWER - Means that the regression model explains 69.4% of the observed variation of the response data around its mean Logistic Regression - ANSWER - used to describe data and to explain the relationship between one dependent binary variable and one or more nominal, ordinal, interval, or ratio-level independent variable Bi...

WPC 300 Final Exam Questions and Answers 100% Pass In an agile approach of analytics what is the first step of the process? perform business discovery In an ETL process, data is loaded into a final target database such as: data warehouse Which of the following data analysis models use optimization techniques? prescriptive analytics Predictive analytics may be applied to __________, which is a set of techniques that use descriptive data and forecasts to identify the decisions mo...

Review Final Exam for WPC 300 2024/2025 questions with A-graded answers Which of the following describes the standard deviation? - CORRECT ANSWER-It is the square root of the variance. When two variables are highly positively correlated, the correlation coefficient will be _______. - CORRECT ANSWER-close to 1 According to statistical notation, what does ∑ stand for? - CORRECT ANSWER-to act as a summation operator The ________ is the observation that occurs most frequently. - CORR...

WPC 300 Exam Answers New Update (A+ Pass) which of the following propostiton describes an existing theory or belief in a population - Answers - null hypothesis if the confidence level is 98%, what is the margin of error in your statistical test - Answers - 2% the one-sample z-statistics is used instead of the one-sample t-statistics when - Answers - when sigma is known sample of size 25 are selected from a population with mean 40 and standard deviation 5. the mean of the sample mean ...

WPC 300 Practical Exam with Complete Solutions VLOOKUP cell we want to look up information for, table with information we want to pull (use absolute reference), column with the corresponding information (number of column ex. A=1), true/false **For range of numbers, they need to be in ascending order (first cell lowest value in lowest range, last cell lowest value in highest range) Which of the following statements is NOT correct based on the sample data provided? The standard d...

WPC 300 Quiz 3 Latest Update Graded A+ Which of the following is a Type-II error? The research hypothesis is actually true, and the test incorrectly fails to reject the null hypothesis In order to reject the null hypothesis, the p-value must be less than the Alpha When sample size increases confidence interval decreases Which of the following proposition describes an existing. theory or belief? Null hypothesis what is the confidence interval when the level of significance is 0...

WPC 300 FINAL EXAM QUESTIONS WITH REVISED ANSWERS ALL CORRECT When sample size increases - Answer- Confidence interval decreases Which of the following proposition describes an existing theory or belief? - Answer- Null hypothesis Which of the following is not a continuous random variable? - Answer- The outcomes of rolling two dice In order to reject the null hypothesis, the p-value must be less than the - Answer- Alpha The central limit theorem states that if the population is no...

WPC 300 Exam Questions Complete Solutions Current Update (Verified A+ Pass) For a normal distribution mean is ___ to median - Answers - equal Standard deviation of a normal distribution is a ___? - Answers - Measure of data dispersion Which of the following is an example of a measure of dispersion? - Answers - Variance Which of the following is an example of a sample? - Answers - The number of IT employees out of all employees working in an office of Google Which of the following ...

WPC 300 - Final Exam Review 2024/2025 latest Heuristics - CORRECT ANSWER-Experience, intuition, rules of thumb, think fast. Analytics - CORRECT ANSWER-• Observe what has worked • Experimentation • Collect data and analyze data • Find patterns • Boundary and Generalizability • Think slow 20% - CORRECT ANSWER-___ of our energy intake goes to the brain. Since slow thinking is expensive, the body is programmed to avoid it. statistical algorithm - CORRECT ANSWER-Our brains do ...

WPC 300 Final Disease Exam Questions Correct Answers Current Update Using intuition is a way of analytical thinking. - Answers - False The difference between primary and secondary data is that primary data are more important. - Answers - False To examine whether smoking leads to cancer is mainly a type of predictive modeling. - Answers - False If you wanted to solve a problem to maximize production of a product, subject to the constraints of having certain number of parts, the approp...