Correlation and Measurement Quiz

What does a correlation coefficient (r) of 0 indicate?

Low variability in data enhances the ability to detect correlations.

If a correlation coefficient (r) is 0.60, what would be the value of the coefficient of determination (r²)?

The coefficient of determination, r², represents the proportion of ______ in one variable that is explained by the other variable.

Match the following terms related to correlation with their descriptions:

Which of the following scales of measurement involves ordered categories with equal intervals?

Differential research involves comparing groups that are created by the researcher.

What is a crucial element of an experimental design that ensures the change in the dependent variable is due to the independent variable?

In a time-series research, observations are compared from one time versus those made at ___________.

Match the following scales of measurement with their descriptions:

Which of the following is an example of a ratio scale?

Correlational designs can definitively establish causation between variables.

In experimental designs, what is the main purpose of randomisation to conditions?

A factor loading of +.35 is generally considered acceptable for inclusion in a factor.

What is the minimum number of items recommended for a factor to ensure adequate reliability?

Describe two key considerations when deciding whether to eliminate an item from a factor analysis.

The principle that suggests adding more items to a factor beyond a certain point provides diminishing returns is known as the ______ of diminishing returns.

Which of the following factor loadings is considered 'very good' according to Comrey & Lee (1992)?

Match the following factor loading ranges with their corresponding descriptions:

Factor analysis is a purely objective process that relies solely on mathematical calculations.

Why is it important to consider the interpretability of a factor structure?

What does ANOVA stand for?

A t-test can only compare two means at a time.

What is the purpose of using a paired samples t-test?

In ANOVA, the __________ variable is referred to as a factor.

Match the following terms with their correct definitions:

What is the primary focus of a within-subjects experimental design?

The F-value in ANOVA represents the ratio of within-group variance to between-group variance.

What is the difference between a single-factor design and a factorial design?

What is the recommended aim for the percentage of variance explained when conducting a factor analysis?

The first factor extracted in factor analysis always explains the least amount of variance.

What should be done when factors no longer represent useful clusters or variables?

A ______ plot is used to depict the amount of variance explained by each factor.

What describes orthogonal rotation in factor analysis?

Name one type of rotation used in factor analysis.

Which statement is true regarding factor loadings?

Match the type of rotation with its description:

Which assumption of ANOVA pertains to the requirement that the variances of different groups are equal?

Exploratory Factor Analysis (EFA) is used to confirm existing hypotheses about factor structures.

What is the goal of conducting a factor analysis?

The ______ test is a non-parametric alternative to ANOVA used when data does not meet the assumptions of normality.

Match the following regression analysis terms with their correct definitions:

Which of the following factors is not an assumption of a regression model?

Correlation implies causation between two variables.

What is a scree plot used for in factor analysis?