Question 1

A researcher shouldnȇt think about coding until halfway through the research process.

Accepted Answer

A) True 
 B)False

Question 2

The level of statistical significance

Accepted Answer

A) is not related to random error. 
B) should be 5% or smaller by rule of thumb. 
C) is irrelevant to inferential statistics. 
D) is the same as standard deviation.

Question 3

Bivariate relationships vary in their degree of___________.A very precise relationship occurs when all the cases fit right along the line that indicates the relationship and direction.The amount of spread among the points on the graph indicates___________(same as above).

Accepted Answer

The answer of Bivariate relationships vary in their degree of___________.A...

Question 4

The arithmetic average is the most widely used measure of central tendency,it is also called what?

Accepted Answer

A) mode 
B) central tendency average 
C) median 
D) mean

Question 5

______________________indicates the probability of finding a relationship in sample data when there is none in the population.

Accepted Answer

The answer of ______________________indicates the probability of finding a relationship...

Question 6

Mr.Marsh discovers that the measure of association is zero in his data relationship.What does this mean?

Accepted Answer

A) He should stop the study right away and refuse to publish. 
B) It means that there is statistical independence.The variables do not covary. 
C) He has made a mistake in his data collection. 
D) It means that there is strong covariation.

Question 7

When there is an absence of an association or covariation between two variables this is called what?

Accepted Answer

The answer of When there is an absence of an...

Question 8

A graph that allows a researcher to see bivariate relationships and usually has independent variables on the horizontal axis and dependent variables on the vertical axis is called a

Accepted Answer

A) percent table. 
B) Bell curve. 
C) scattergram. 
D) covariation.

Question 9

Covariance means to vary together.What is the opposite of covariance in a bivariate relationship?

Accepted Answer

A) scattergram 
B) anticovariance 
C) univariance 
D) statistical independence

Question 10

What is a control variable in a nonexperimental research study?

Accepted Answer

The answer of What is a control variable in a...

Question 11

What three aspects of a bivariate relationship are revealed in a scattergram?

Accepted Answer

The answer of What three aspects of a bivariate relationship...

Question 12

The spread around the center of a distribution can be measured three ways.The
gives the highest and lowest ends of a set of numbers.

Accepted Answer

The answer of The spread around the center of a...

Question 13

What is the purpose of multiple regression analysis? What two things does it tell a researcher?

Accepted Answer

The answer of What is the purpose of multiple regression...

Question 14

What is the mode in this group of numbers: 1,1,1,1,5,6,16,33,1

Accepted Answer

A) 1 
B) 3 
C) 16 
D) 5

Question 15

It is sufficient to say when showing an association between an independent variable and a dependent variable that the independent variable causes a dependent variable.

Accepted Answer

A) True 
 B)False

Question 16

Statistics refers both to a set of collected numbers such as existing statistics in the Statistical Abstract and a branch of applied mathematics.

Accepted Answer

A) True 
 B)False

Question 17

If a researcher demands a very high standard of significance,he may make a mistake - saying there is no relationship in the population when in reality one exists.

Accepted Answer

A) True 
 B)False

Question 18

Mr.Marsh wants to see if smokers like to gamble at casinos.Once he has his data,he plots the information in a scattergram.What three aspects of the bivariate relationship will the scattergram reveal? Explain the significance of each.

Accepted Answer

The answer of Mr.Marsh wants to see if smokers like...

Question 19

What is the mean of the following set of numbers: 6,3,9

Accepted Answer

A) 3 
B) 5 
C) 9 
D) 6

Question 20

The power of multiple regression is an ability to control for many variables simultaneously.

Accepted Answer

A) True 
 B)False

Exam 9: Making Sense of the Numbers

A researcher shouldnȇt think about coding until halfway through the research process.

The level of statistical significance

Bivariate relationships vary in their degree of_.A very precise relationship occurs when all the cases fit right along the line that indicates the relationship and direction.The amount of spread among the points on the graph indicates_(same as above).

The arithmetic average is the most widely used measure of central tendency,it is also called what?

______________________indicates the probability of finding a relationship in sample data when there is none in the population.

Mr.Marsh discovers that the measure of association is zero in his data relationship.What does this mean?

When there is an absence of an association or covariation between two variables this is called what?

A graph that allows a researcher to see bivariate relationships and usually has independent variables on the horizontal axis and dependent variables on the vertical axis is called a

Covariance means to vary together.What is the opposite of covariance in a bivariate relationship?

What is a control variable in a nonexperimental research study?

What three aspects of a bivariate relationship are revealed in a scattergram?

The spread around the center of a distribution can be measured three ways.The gives the highest and lowest ends of a set of numbers.

What is the purpose of multiple regression analysis? What two things does it tell a researcher?

What is the mode in this group of numbers: 1,1,1,1,5,6,16,33,1

It is sufficient to say when showing an association between an independent variable and a dependent variable that the independent variable causes a dependent variable.

Statistics refers both to a set of collected numbers such as existing statistics in the Statistical Abstract and a branch of applied mathematics.

If a researcher demands a very high standard of significance,he may make a mistake - saying there is no relationship in the population when in reality one exists.

Mr.Marsh wants to see if smokers like to gamble at casinos.Once he has his data,he plots the information in a scattergram.What three aspects of the bivariate relationship will the scattergram reveal? Explain the significance of each.

What is the mean of the following set of numbers: 6,3,9

The power of multiple regression is an ability to control for many variables simultaneously.