Exam 17: Overview and Extension: Statistical Tests for More Complex Designs

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?

Under the correct circumstances a nonparametric tests can be as powerful as a parametric test.

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

The power of a statistical test is influenced by_____.

An investigator should never focus on multiple parameters (means,medians,ranks).

If the dependent variable is measured on an ordinal level that seriously departs from interval level characteristics,a parametric test is always the optimal test.

One example of a multivariate statistic is two-way between-subjects analysis of variance.

Inference of a relationship between two variables depends on the comparison of means.

When both independent variables are within-subjects in nature,the data can be analyzed using a two-way repeated measures analysis of variance.

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

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

Very few research problems require that more than two variables be simultaneously studied.

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

The American Heart Association (AHA)found that vitamin A enhances visual acuity.They had a total of 10,000 subjects half who received a vitamin A supplement and the other half received a placebo and visual acuity was measured 3 months after the treatment was given.The AHA should use the ____________________ to analyze the data.

An index of the strength of the relationship between the criterion variable and the set of predictor variables is provided by the _____,symbolized by _____.

A psychologist's is studying the affects of Ritalin on concentration in 40 children that have been matched on age and IQ.Twenty of the children receive Ritalin and are asked to take an exam that measures their concentration.The other 20 children did not receive Ritalin,but a placebo pill and took the same exam.What statistical test is appropriate for this study?

Statistical techniques that analyze the relationship between three or more variables are referred to as multivariate statistics.

The calculation of eta²_____when the statistical test is not significant.

If you want to determine if GPA is correlated with SAT scores what test would you use?

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?