Exam 12: Data Analysis and Interpretation: Part II Tests of Statisticalsignifi Cance and the Analysis Story

A psychologist conducts a study to test a new treatment.The effect of treatment is statistically significant;the effect size is small according to accepted criteria.When considering the practical or clinical significance of the finding,the psychologist is likely to be concerned about

The most common error associated with null hypothesis testing in psychological research is

The degrees of freedom for a t-test for independent groups are

Figure: Use the ANOVA Summary Table to answer the questions that follow: -Describe the analyses that should be conducted next.

Which of the following factors is not likely to be related to the power of a statistical test comparing two means?

Two measures of effect size for an independent groups design with more than two means are

Figure: Use the ANOVA Summary Table to answer the questions that follow: -Which results are statistically significant? Explain how you arrived at this decision.

When reporting the results of a complex design experiment,which of the following should not be included?

= 7.30,p = .01.On the basis of this information we may conclude that there were _______ independent groups in this experiment.

(a)What is a Type I error and what is a Type II error when using NHST? (b)Which is more common in psychological research?

The most frequently used inferential statistics test when comparing more than two means is

The probability we use to define a statistically significant outcome is called the

The primary factor that researcher use to control power of a statistical test is

The null hypothesis is the assumption that the independent variable

The initial overall analysis of an experiment based on the analysis of variance is called

The t-test for independent groups is the appropriate inferential test when

The level of significance,or alpha,in psychological research is generally set at