Exam 18: Overview and Extension: Statistical Tests for More Complex Designs

Sometimes research designs involve one between-subjects independent variable and one within-subjects independent variable.

The strength of the relationship is usually indexed by the 95% confidence interval.

The reason(s)why a One-way ANOVA is used to compare 3 or more means and not several t-tests is because:

A statistical test led Dr.Jones to incorrectly decide that his independent variable had no affect on the dependent variable,when in fact it did.Dr.Jones committed a(n)

A researcher is interested in the number of errors in the following conditions.Thirty people are given a list of word pairs to study;half of the pairs are semantically related and half are unrelated.Another thirty people are given a different list of word pairs to study;half of the pairs are orthographically related and half are unrelated.Later all 60 people are asked to recall the word pairs.Which of the following tests would be used to analyze this data?

In a one-way analysis of variance (repeated measures)the strength of the relationship is determined by: _____.

A researcher has found that his distribution is not normal but bimodal.He had planned to use a Independent groups t-test to analyze his data.His alternative statistical test should be____________________.

The Independent groups t-test assumes _____.

In situations where the dependent measure has only two or three values,most researchers will not use a parametric test.

Statistical techniques for analyzing the relationship between three or more variables are referred to as:

Statistical analyses that are designed to analyze the relationship between three or more variables simultaneously are called _____ tests.

The joint influence of two within-subjects qualitative independent variables can be studied using:

The use of IPod's may induce hearing loss according to research conducted at Washington State University.They had a total of 500 subjects that were given IPods set a decibel (db)rate of either 0 (no sound),40db or 70db.After listening to the same music on the IPod's for 1 week each subject was given a hearing test.Researchers should use ____________________ to analyze the data.

Stan is studying the effects of alcohol consumption on Dexterity.He is using 2 groups of subjects.On group will receive alcohol and the other a placebo,and then a dexterity test is administered.What statistical test should he use?

If both variables are qualitative,but one or both are within-subjects in nature,the appropriate method of data analysis is the chi square test as discussed in Chapter 15..

The main difference between parametric & nonparametric statistics is that parametric statistics:

The choice of which distributional parameter to compare across groups is often dictated by theory or the substantive question of interest.

The use of IPod's may induce hearing loss according to research conducted at Washington State University.They had a total of 500 subjects that were given IPods set a decibel (db)rate of either 0 (no sound),40db or 70db.After listening to the same music on the IPod's for 1 week each subject was given a hearing test.The two confounds that should be addressed are the mount of ____________________ prior to the study as well as the participants' ____________________.

When applied to a single independent variable having only two levels,multivariate analysis of variance is referred to as:

The goal of factor analysis is to determine if the correlations among a set of variables can be accounted for by one or more underlying dimensions,or factors.