Exam 14: Quantitative Data Analysis

Statistics used to describe the distribution and relationship among variables are:

If a single frequency display presents a set of conceptually similar variables having the same response categories, it is called a:

Type I error occurs when there is no evidence of a statistical relationship between two variables based on the sample, but in fact, the two variables are related.

Match the cross-tabulation concept with the definition. -Direction

If r = 0, then:

The interquartile range measures variability while avoiding problems created by outliers.

An alpha level of .10 means that the researcher is willing to accept a 10% chance of concluding that there is a relationship between the variables in the sample when there is no relationship in the population.

Match the concept with the definition. -Range

Match the cross-tabulation concept with the definition. -Patterm

Compare and contrast a bar chart, histogram, and frequency polygon.

Match the concept with the definition. -Mean

The mode is the most frequent value in a distribution.

The mean, median, and mode can all be used to describe any variable.

Which summary statistic should be used to answer the question, "What hobby is most common for college students today"?

Match the concept with the definition. -Median

Discuss the problems you may encounter as you review instruments/questionnaires from a survey you administered.

When using _______ coding, a second person recodes a sample of the forms and then the percentage of agreement on all the items on the forms is computed.

Match the concept with the definition. -Base number (N)

Why is a variable's level of measurement important in determining the appropriate descriptive statistics, graphs, and bivariate statistics? Provide examples to describe the nature of the problem.

Match the concept with the definition. -Body of the table