Embry-Riddle Aeronautical University - RSCH 202

TEST 1

Question1)A Chi-square test can be used if the independent variable is measured on a .(1) . scale and the dependent variable on a ..(2) .. scale.

Question 2

Which instrument would one use to assess the reliability of a scale (a set of questions)?

Question 3

To be able to conduct a t-test it is important:

Question 4

Which of the following would not be appropriate for giving an overview of ordinal data?

Question 5

With what instrument could the predictive validity of a metric scale (a set of questions) best be determined?

Question 6

Multiple regression analysis measures the effect of an independent variable on the dependent variable, while the other independent variables are held constant.

Question 7

ANOVA is used to determine whether the variance between groups significantly differ from each other.

Question 8

Cronbach's alpha indicates to what extent scale items are correlated to each other?

Question 9

The mode and the median are always the same value.

Question 10

Multicollinearity implies that the independent variables are highly correlated with each other.

Question 11

The objective of regression analysis is to explain a dependent variable based on 1 or more independent variables.

Question 12

Regression analysis is used when the dependent variable is nominal or ordinal in nature.

Question 13

An overview of a variable on nominal level can be given by a pie chart.

Question 14

The statistical null hypothesis is rejected when the p-value is small enough.

Question 15

When you want to test if the average score of an exam significantly differs from 7.3 (the average score of last year), an independent samples t-test is most appropriate.

Test 2

Question 1

In what way do the concepts of causality and correlation relate to each other?

Question 2

Suppose that a regression model is developed to predict the width of a book from the number of pages and a coefficient of determination, R2, of .8468 results. What is the meaning of this R2 value?

Question 3

Which test could best be used to test the hypothesis that students for a certain course attended tutorials from lecturer X are happier (measured on interval-level) than students who attended tutorials from lecturer Y and Z?

Question 4

The coefficient of determination, R2,

Is a statistical measure of how well the regression line approximates the real data points.

Question 5

Which test could best be used to test the hypothesis that the average grade of students is higher than a 7 on a 10- point scale?

Question 6

The objective of regression analysis is to explain a dependent variable based on 1 or more independent variables.

Question 7

An overview of a variable on nominal level can be given by a pie chart.

Question 8

Regression analysis is used when the independent variable is nominal or ordinal in nature.

Question 9

Regression analysis is used when the dependent variable is nominal or ordinal in nature.

Question 10

Chi-square analysis is used when the independent variable is nominal or ordinal.

Question 11

Multicollinearity implies that the independent variables are highly correlated with each other.

Question 12

ANOVA is used to determine whether the variance between groups significantly differ from each other.

Question 13

When you want to test if the average score of an exam significantly differs from 7.3 (the average score of last year), an independent samples t-test is most appropriate.

Question 14

Chi-square analysis cannot be used to test hypotheses.

Question 15

Mean and median actually are identical concepts.

Test 3

Question 1

A researcher wants to give an overview of the characteristics of the respondents in his sample. How could this researcher best provide insight in the gender of the respondents?

Question 2

To be able to conduct a t-test it is important:

Question 3

Which test could best be used to test the hypothesis that the average price that people are willing to pay for a meal at the University restaurant differs between Dutch, German and Chinese students?

Regression analysis. Independent samples t-test. Chi-square test.

Question 4

The coefficient of determination, R2,

Question 5

In what way could you best give an overview of ordinal data? By the mean.

Question 6

Mean and median actually are identical concepts.

Question 7

An overview of a variable on nominal level can be given by a pie chart.

Question 8

Multiple regression analysis measures the effect of an independent variable on the dependent variable, while the other independent variables are held constant.

Question 9

Multicollinearity implies that the independent variables are highly correlated with each other.

Question 10

Chi-square analysis is used when the independent variable is nominal or ordinal.

Question 11

Cronbach's alpha and the split-half reliability coefficient are both instruments to determine the reliability of a scale.

Question 12

The Cronbach's alpha of a scale indicates to what extent different items measure the same construct.

Question 13

Chi-square analysis cannot be used to test hypotheses.