Exam 12: Quantitative Data Analysis Part 2: Hypothesis Testing

Multiple regression analysis can only be used when variables are measured with multi-item scales.

The most appropriate technique to test the hypothesis that the average price that students are willing to pay for a meal at the University restaurant differs between Dutch,German and Chinese students is …?

The most appropriate technique to establish whether the average price of a Bacardi Breezer is higher than €5 is …?

What is the most appropriate technique to test the hypothesis that students who,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?

A Sobel-test is generally used to test moderation.

A researcher tests if the loyalty (measured on a 5-point Likert scale)of people with a loyalty card significantly differs from the loyalty of people without a loyalty card.The most appropriate technique to test this is:

For determining the F-ratio,the variance between groups ('between-groups mean square')is divided by the variance within groups ('within-groups mean square').

A researcher estimates his model by means of regression analysis.The significance level of his model is .0012 and the R-squared is .31.Which conclusion can the researcher draw from these data?

To be able to conduct an analysis in SPSS it is important that the independent and dependent variable(s)are measured on the right scale.Which of the following statements is correct when you want to conduct an independent samples t-test?

What is the most appropriate technique to test if having a mobile phone is related to having a fixed telephone connection?

The Wilcoxon signed-rank test is:

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

A researcher want to test if a cause-effect relationships exists between someone's age and the number of hours of sleep someone needs.She measures age as follows: 0 < 20 years. 0 20 - 50 years. 0 > 50 years. Furthermore,participants of the research can fill in the number of hours they sleep on average in a day on a dotted line. What is the most appropriate technique to test the hypothesis that age influences the number of hours someone sleeps?

A Type 1 error,also referred to as alpha ( $\alpha$ )is the probability of rejecting the null hypothesis when it is actually true.

Univariate statistical techniques are used when you want to examine two-variable relationships.If you,on the other hand,are interested in the relationship between many variables,such as in the Excelsior Enterprises case,multivariate statistical techniques are required.

A solution to multicollinearity is to collect more data.

Essentially,the relations that are tested through ANOVA could also be tested through regression analysis (by dummy variables).

Assume the researcher also wants to know if the average number of hours sleep (across groups)significantly differs from 7.Which test could she best use?

A dummy variable is one that has two or more distinct levels,which are coded 0 or 1.

A Type 2 error,also referred to as beta ( $\beta$ ),is the probability of failing to reject the null hypothesis given that the alternative hypothesis is actually true.