s
The most common measure of effect size for the correlation coefficient is called ______
the coefficient of determination (r^2)
A researcher records differences in ratings of emotion among participants watching either a drama or a romance film. Assuming that the population variance is unknown, what type of t-test is appropriate for this study?
two-independent-sample t-test
The source of variability associated with error variance in the one-way between- subjects ANOVA is called ______.
within-groups variability
A researcher measures the following correlation between number of years of education and life satisfaction: r = +.1. What is the value of the coefficient of determination?
.01
A researcher conducts a study in which k = 6 and n = 6 per group. What are the critical values for the one-way between-subjects ANOVA at a .05 level of significance?
2.53
A researcher measures attractiveness ratings of a male confederate among 30 women who were told the confederate was either single, dating, or married (n= 10 per group). What are the degrees of freedom for error for the one-way between-subjects ANOVA?
27
Which of the following is an assumption for computing a one-way between-subjects ANOVA?
The population being sampled from is normally distributed. Participants were selected to participate using a random procedure. One observation has no effect on the likelihood of another observation.
A professor compared differences in class grades between students in their freshman, sophomore, junior, and senior years of college. If different participants were in each group, then what type of statistical design is appropriate for this study?
a one-way between-subjects ANOVA
ANOVA stands for ______.
analysis of variance
Using a between-subjects ANOVA design, ______.
n.k participants are each observed one time
A researcher randomly assigned N= 16 rodents to experience one of four levels of shock (n= 4 per group) following the illumination of a visual cue. If SSbg= 24 and SSe= 48, then what was the decision at a .05 level of significance for a one-way between-subjects ANOVA?
retain the null hypothesis
The correlation coefficient is used to measure the ______ and ______ of the linear relationship between two factors
strength, direction