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what is the difference between inter participant and intra participant variance which of these types of variance is
the centers for disease control and prevention released a report in 1998 that attributed part of the increase in youth
1 if the independent variable has absolutely no effect on the dependent variable will the means of the experimental
1 what kind of variance does the mean square within-groups mswg reflect2 the sum of squares between-groups ssbg
1 what is the name of the statistic used in an anova2 if the independent variable has no effect the calculated value of
1 in an experiment with two independent variables an anova partitions the total variance into four components what are
imagine that you conduct a study to test the average level of guilt experienced by christians jews buddhists muslims
when researchers set their alpha level at 05 they reject the null hypothesis and conclude that the independent variable
1 how do quasi-experimental designs differ from true experiments2 under what circumstances would a researcher use a
1 explain the rationale behind time series designs2 describe the simple interrupted time series design3 why is
1 discuss how the interrupted time series design with a reversal and the interrupted time series design with multiple
what three criteria must be met to establish that one variable causes changes in behavior which of these criteria are
1 why does quasi-experimentation sometimes require the use of patched-up designs2 discuss the philosophy of critical
although quasi-experimental designs are widely accepted in behavioral science some researchers are troubled by the fact
imagine that your town or city has increased its nighttime police patrols to reduce crimedesign two quasi-experiments
1 why do researchers use inferential statistics2 distinguish between the null hypothesis and the experimental
1 explain the difference between rejecting and failing to reject the null hypothesis in which case does a researcher
1 if the calculated value of t is less than the critical value do you reject or fail to reject the null hypothesis
1 why must a different t-test be used for matched-subjects and within-subjects designs than for randomized groups
if the results of a t-test lead you to reject the null hypothesis what is the probability that you have made a type ii
a using the table of critical values of t in appendix a-2 find the critical value of t for an experiment in which there
if the difference between two means is not statistically significant how certain are you that the independent variable
generally researchers are more concerned about making a type i error than a type ii error can you think of any
a researcher was interested in the effects of weather on cognitive performance he tested participants on either sunny
1 whats so bad about making a type i error2 how does the bonferroni adjustment control for type i error when many