Exam 5: Data Analysis in Quantitative Studies

A histogram displays data points that most frequently cluster close to the y-axis with few data points on the right side of the graph. A histogram displaying this trend suggests what kind of dataset?

The mean should only be calculated for interval and ratio data.

In a meta-analysis, you are interested in whether there are meaningful differences in the study results under review. What value would you look at to determine the meaningfulness?

Discuss when you would use an ANOVA and discuss when and why you would conduct a post-hoc test.

Which of the following describes when Type I errors occur?

When ordinal data are used, what is the association between the data called?

A researcher is interested in determining whether exercise-related new year's resolution goals predict the time spent exercising. What analysis should they use?

Describe how you would calculate the interquartile range.

Parametric tests are to ________ as non-parametric tests are to ________.

A classification system where two or more groups respond on two or more categories or outcomes is visually represented through which of the following?

What is a meta-analysis? Discuss why a researcher would want to conduct a meta-analysis and the purpose of calculating the effect size in a meta-analysis.

When is practical significance often valued over statistical significance?

Main effects and interaction effects can be present within what type of statistical analysis?

You calculate a sample mean for three different groups. The accuracy of the average of the sample means is reflected by which of the following?

Measures of variability only provide information regarding how the scores vary.

A "pointy" distribution (i.e., few high scores and low scores with more frequent scores in the middle) is an example of a distribution that can be describe by which of the following terms?

What does rejecting the null hypothesis suggest?

Briefly discuss a scenario where an analysis of covariance would be beneficial.

Histogram graphs are useful for quickly examining the distribution and shape of the collected data.

You have continuous data points from two variables and would like to determine the relationship between the variables. What statistical analyses would you use?