Question 1

In a regression analysis if SST = 4500 and SSE = 1575, then the coefficient of determination is

Accepted Answer

A) 0.35 
B) 0.65 
C) 2.85 
D) 0.45 
A) 0.35 
B) 0.65 
C) 2.85 
D) 0.45

Question 2

Exhibit 14-3
Regression analysis was applied between sales data (in $1,000s) and advertising data (in $100s) and the following information was obtained.  
-Refer to Exhibit 14-3. Based on the above estimated regression equation, if advertising is $3,000, then the point estimate for sales (in dollars) is

Accepted Answer

A) $66,000 
B) $5,412 
C) $66 
D) $17,400 
A) $66,000 
B) $5,412 
C) $66 
D) $17,400

Question 3

If there is a very strong correlation between two variables, then the coefficient of correlation must be

Accepted Answer

A) much larger than 1, if the correlation is positive 
B) much smaller than 1, if the correlation is negative 
C) either much larger than 1 or much smaller than 1 
D) None of these answers is correct. 
A) much larger than 1, if the correlation is positive 
B) much smaller than 1, if the correlation is negative 
C) either much larger than 1 or much smaller than 1 
D) None of these answers is correct.

In a regression analysis if SST = 4500 and SSE = 1575, then the coefficient of determination is

If there is a very strong correlation between two variables, then the coefficient of correlation must be

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit, Independence and Multiple Proportions

Experimental Design and Analysis of Variance

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

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Exam 14: Simple Linear Regression

In a regression analysis if SST = 4500 and SSE = 1575, then the coefficient of determination is

If there is a very strong correlation between two variables, then the coefficient of correlation must be

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit, Independence and Multiple Proportions

Experimental Design and Analysis of Variance

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters