Exam 12: Data Analysis and Interpretation: Part Iitests of Statistical Significance and the Analysis Story

= 7.30,p = .01.On the basis of this information we may conclude that

A researcher manipulated one independent variable in a complex design experiment using a random groups design and manipulated the second independent variable using a repeated measures design.The researcher's plan for data analysis should include

The probability we use to define a statistically significant outcome is equivalent to

The appropriate inferential test when each subject participates in both conditions of an experiment is

A common measure of effect size for the effects in a complex design using ANOVA is

Null hypothesis significance testing uses the laws of probability to estimate the likelihood of an outcome by first assuming that

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

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

The ANOVA Summary Table for a two-factor,mixed design is divided into two parts; the between subjects section and the __________ section.

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

Use the ANOVA Summary Table to answer the question that follow: What is the total number of subjects,and assuming equal group size,how many subjects are there in each group?

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

When a result is "statistically significant," why should we not immediately claim that our results are "important" (either scientifically or practically)?

Use the ANOVA Summary Table to answer the question that follow: What values form the numerator and denominator for the F-ratio (F-test)for each statistical effect?

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

Confidence intervals drawn around group means in a complex design provide information regarding

The expected value of the F-statistic when the null hypothesis is true is ________.

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

What does NHST tell us when a "statistically significant" finding is obtained?

Read the following research report and answer the question that follow. A researcher compares men's and women's attitudes toward dating their best friend's former girl/boy friend.Specifically,college students are asked to read a story describing a situation in which their best friend breaks up with a partner and they later have an opportunity to date their best friend's former partner.Men and women rate the likelihood they would choose to date their best friend's former partner using a 10-point scale (0 = not at all likely and 9 = completely likely).In addition,participants rate the extent to which a similar situation has occurred to them using a 10-point scale (0 = not at all and 9 = completely).The mean ratings for each question for the two groups,men and women,are presented below: How many men and women were there in this study (assuming equal numbers of men and women)?