Mgsc 291 exam 1 Study guides, Class notes & Summaries
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MGSC 291 EXAM 1 | 80 Questions with 100% Correct Answers | Updated | Download to score A+
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Statistics - The methodology of extracting useful information from a data set 
What are the two branches of statistics? - Descriptive and Inferential 
Descriptive Statistics - 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 - refers to extracting useful information from a sample to draw 
conclusions about a population 
Population - Consists of all items of intere...
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MGSC 291 - Hendrix - Test 1 Exam Questions Correctly Answered.
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MGSC 291 - Hendrix - Test 1 Exam Questions Correctly Answered. 
 
 
How many rows of ATM transaction data do you have? Note: This asks for the number of observations (n), not the row number. - CORRECT ANSWER Highlighting the specific data in a column will give you the count, or you can do some row math. 
 
Check and clean your data. Did you find any problems? - CORRECT ANSWER Be sure you always check! Data should be complete (not missing any values), correct (not miscoded), and formatted correct...
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MGSC 291 Exam 3 Question and answers 100% correct 2024/2025
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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...
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MGSC 291 Exam 3 Prep Question and answers correctly solved 2024/2025
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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...
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MGSC 291-Exam 1 Practice Questions Correctly Answered.
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MGSC 291-Exam 1 Practice Questions Correctly Answered. 
 
 
The branch of statistical statistics called descriptive statistics summarizes important aspects of a data set. 
True/False - CORRECT ANSWER True 
 
The branch of statistical data called inferential statistics refers to drawing conclusions about sample data by analyzing the corresponding population. 
True/False - CORRECT ANSWER False: Draws conclusions about the population, based on the sample data from that population 
 
The two branch...
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MGSC 291-Exam 1 -2023
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MGSC 291-Exam 1 -2023...
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MGSC 291 Exam 3 Question and answers rated A+ 2024/2025
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MGSC 291 Exam 3 Question and answers rated A+ 2024/2025Sample Correlation Coefficient (r) - correct answer measures the strength of a linear relationship between x and y, measures how close the points come to a straight line (-1<=r<=1) 
 
An unknown population correlation coefficient - correct answer defined as rho (p) 
 
Simple Regression - correct answer provides an equation for predicting the value of a random variable (y) using values of another variable (x) 
 
Y Variable - corr...
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MGSC 291 Exam 3 Question and answers already passed 2024/2025
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MGSC 291 Exam 3 Question and answers already passed 2024/2025Sample Correlation Coefficient (r) - correct answer measures the strength of a linear relationship between x and y, measures how close the points come to a straight line (-1<=r<=1) 
 
An unknown population correlation coefficient - correct answer defined as rho (p) 
 
Simple Regression - correct answer provides an equation for predicting the value of a random variable (y) using values of another variable (x) 
 
Y Variabl...
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MGSC 291 Exam 1 University of South Carolina With Questions And 100% CORRECT ANSWERS
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MGSC 291 Exam 1 University of South Carolina With Questions And 100% CORRECT ANSWERS
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mgsc 291 exam 2 professor hendrix Question and answers 100% correct 2024/2025
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mgsc 291 exam 2 professor hendrix Question and answers 100% correct 2024/2025The 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 
 
The interpretation of a hypothesis test result is about the - correct answer parameter 
 
what is used to form the interpretation of a hypothesis test result? - correct answer statistic 
 
power: - correct answer reject...
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