EXST 2201 EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
Are two columns of both Height and Weight of individual's appropriate to
measure movement (9.1)
Yes, because bith height and weight come from one individual
What are the two important points to remember when interpreting statistics of
movement (9.1)
Always look at data first & Movement is not causation
Why is a lurking variable important (9.1)
Because it affects the statistical results without our knowledge
What is the movement between two columns of data values (9.1)
How the value of one variable moves in relation to the value of the other variable
what are the statistical methods used to measure variable relationship (9.1)
A scatter plot, linear regression, and linear correlation
What type of relationship between two variables can a scatter plot detect (9.1)
Any type of relationship
Where are the predictor variable and response variable plotted (9.1)
The predictor variable is on the x-axis
The response variable is on the y-axis
What type of relationship between two variables can linear correlation detect (9.1)
only a linear relationship
, What information does linear regression give the linear correlation does not give
(9.1)
The magnitude of the
effect of the linear relationship
conceptually how is information about a linear relationship summarized in linear
regression (9.1)
by the line of best fit through the middle of the scatterplot
what statistical method will this book use to calculate the equation of the line in
linear regression? (9.1)
The least-squares method of linear regression
in chapter 9, what characteristic of columns of data values is being measured
(9.1)
The movement between two columns of data values
What is needed to measure the movement between two columns of data values
(9.1)
Two columns of dependent data values
Can linear correlation, measure linear relationship, as well as just detect it? (9.1)
yes, it can measure both the direction and the strength of the linear relationship
What is the range of values for linear correlation measure? (9.1)
-1 to +1, inclusive ([-1,+1])
What is a scatterplot used for in the field of statistics? (9.2)
To visually see the pattern of the relationship between two variables
select the overall patterns look for an analyzing a scatterplot (9.2)
COMPLETE SOLUTIONS VERIFIED LATEST UPDATE
Are two columns of both Height and Weight of individual's appropriate to
measure movement (9.1)
Yes, because bith height and weight come from one individual
What are the two important points to remember when interpreting statistics of
movement (9.1)
Always look at data first & Movement is not causation
Why is a lurking variable important (9.1)
Because it affects the statistical results without our knowledge
What is the movement between two columns of data values (9.1)
How the value of one variable moves in relation to the value of the other variable
what are the statistical methods used to measure variable relationship (9.1)
A scatter plot, linear regression, and linear correlation
What type of relationship between two variables can a scatter plot detect (9.1)
Any type of relationship
Where are the predictor variable and response variable plotted (9.1)
The predictor variable is on the x-axis
The response variable is on the y-axis
What type of relationship between two variables can linear correlation detect (9.1)
only a linear relationship
, What information does linear regression give the linear correlation does not give
(9.1)
The magnitude of the
effect of the linear relationship
conceptually how is information about a linear relationship summarized in linear
regression (9.1)
by the line of best fit through the middle of the scatterplot
what statistical method will this book use to calculate the equation of the line in
linear regression? (9.1)
The least-squares method of linear regression
in chapter 9, what characteristic of columns of data values is being measured
(9.1)
The movement between two columns of data values
What is needed to measure the movement between two columns of data values
(9.1)
Two columns of dependent data values
Can linear correlation, measure linear relationship, as well as just detect it? (9.1)
yes, it can measure both the direction and the strength of the linear relationship
What is the range of values for linear correlation measure? (9.1)
-1 to +1, inclusive ([-1,+1])
What is a scatterplot used for in the field of statistics? (9.2)
To visually see the pattern of the relationship between two variables
select the overall patterns look for an analyzing a scatterplot (9.2)
