Mgsc 291 Study guides, Class notes & Summaries
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![MGSC 291 PRACTICE EXAM 2023](/docpics/3252543/64db8308ac322_3252543_121_171.jpeg)
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MGSC 291 PRACTICE EXAM 2023
- Exam (elaborations) • 20 pages • 2023
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MGSC 291 PRACTICE EXAM 2023...
![MGSC 291 EXAM WITH QUESTIONS AND ANSWERS](/docpics/3252437/64db7f10465c4_3252437_121_171.jpeg)
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MGSC 291 EXAM WITH QUESTIONS AND ANSWERS
- Exam (elaborations) • 19 pages • 2023
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![MGSC 291 Exam 1 Question and answers already passed 2024/2025](/docpics/4617057/65de5cda9a678_4617057_121_171.jpeg)
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MGSC 291 Exam 1 Question and answers already passed 2024/2025
- Exam (elaborations) • 17 pages • 2024
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MGSC 291 Exam 1 Question and answers already passed 2024/2025R code: + - correct answer addition 
 
R code: - - correct answer subtraction 
 
R code: * - correct answer multiplication 
 
R code: / - correct answer division 
 
R code: ^ - correct answer exponent 
 
R code: # - correct answer note (anything after this symbol will be ignored by R) 
 
R code: <- - correct answer defines an object 
 
R code: c - correct answer combine function (creates a vector of n...
![MGSC 291 Exam 3 Question and answers 100% correct 2024/2025](/docpics/4616938/65de58d4a0f80_4616938_121_171.jpeg)
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MGSC 291 Exam 3 Question and answers 100% correct 2024/2025
- Exam (elaborations) • 14 pages • 2024
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MGSC 291 Exam 3 Question and answers 100% correct 2024/2025 The P-value of a hypothesis test is the probability of seeing a test statistic that extreme or more - correct answer in the direction of the alternative hypothesis if the null is true 
 
Multiple Linear Regression equation - correct answer y=Bo+B1X1+B2X2....+BkXk 
 
residual equation - correct answer y - y hat (observed y-fitted y) 
 
MLR degrees of freedom - correct answer Df=n-k-1 (k= number of predictors) 
 
Find/interpre...
![MGSC 291 Exam 1 University of South Carolina Question and answers 2024/2025 verified to pass](/docpics/4617065/65de5d1b6e2f8_4617065_121_171.jpeg)
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MGSC 291 Exam 1 University of South Carolina Question and answers 2024/2025 verified to pass
- Exam (elaborations) • 14 pages • 2024
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MGSC 291 Exam 1 University of South Carolina Question and answers 2024/2025 verified to passputting in a dataset - correct answer data<-c(81,85,93,93,99,76,75,84,78,84,81,82,89,81,96,82,74,70,84,86,80,70,131,75,88,102,115,89,82,79,106) 
 
length(data) - correct answer tells you how may entries are in your vector 
 
sort(data) - correct answer puts data smallest to largest 
 
summary(data) - correct answer returns the five number summary and the sample mean 
 
mean(data) 
sd(data) 
sum(dat...
![mgsc 291 test Questions with complete solution 2024/2025](/docpics/4616895/65de5783e65fc_4616895_121_171.jpeg)
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mgsc 291 test Questions with complete solution 2024/2025
- Exam (elaborations) • 10 pages • 2024
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mgsc 291 test Questions with complete solution 2024/2025 use log-log model when - correct answer When the response and explanatory variable move multiplicatively together 
- when you model log(y) against log(x) 
- Y changes B% for every 1% increase in x 
- B is an elasticity 
 
use logistic regression when - correct answer binary response (yes/no, 1/0, T/F) 
 
fit logistic regression using "glm" with the - correct answer family="binomial" argument 
 
predict logistic regression using "pr...
![MGSC 291 EXAM 1 Question and answers correctly solved 2024/2025](/docpics/4617090/65de5e0b1f9d4_4617090_121_171.jpeg)
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MGSC 291 EXAM 1 Question and answers correctly solved 2024/2025
- Exam (elaborations) • 11 pages • 2024
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MGSC 291 EXAM 1 Question and answers correctly solved 2024/2025Statistics - correct answer The methodology of extracting useful information from a data set 
 
What are the two branches of statistics? - correct answer Descriptive and Inferential 
 
Descriptive Statistics - correct answer refers to the summary of a data set in the form of tables, graphs, or the calculation of numerical measures 
-collecting, organizing, and presenting the data 
 
Inferential Statistics - correct answer ...
![MGSC 291 Exam 3 Prep Question and answers correctly solved 2024/2025](/docpics/4616986/65de5a7ed035f_4616986_121_171.jpeg)
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MGSC 291 Exam 3 Prep Question and answers correctly solved 2024/2025
- Exam (elaborations) • 10 pages • 2024
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MGSC 291 Exam 3 Prep Question and answers correctly solved 2024/2025What is the first step in processing you data for a time series analysis in R? 
- make all data factors 
- make date variable a factor with the factor() function 
-make date variable be recognized as a date in R with the as.Date() function - correct answer make date variable be recognized as a date in R with the as.Date() function 
 
How does R store date variables? 
-as factors 
-as characters 
-as the number of days relati...
![MGSC 291 Exam 1 With Complete Questions and Answers](/docpics/3252340/64db7b19623f0_3252340_121_171.jpeg)
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MGSC 291 Exam 1 With Complete Questions and Answers
- Exam (elaborations) • 9 pages • 2023
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MGSC 291 Exam 1 With Complete Questions and Answers...
![MGSC 291 Exam 3 Prep -2023](/docpics/3252249/64db7799e4e84_3252249_121_171.jpeg)
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MGSC 291 Exam 3 Prep -2023
- Exam (elaborations) • 9 pages • 2023
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MGSC 291 Exam 3 Prep -2023...
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