STAT 211 FINAL EXAM LATEST QUESTIONS WITH 100% SOLVED ANSWERS!!
Setting the significance level cutoff at .10 instead of the more usual .05 increases the likelihood of
a______. - (answer)Type 1 Error
One important advantage of using effect sizes is that_______. - (answer)it's standardized so we can use
it for multiple studies
In actual practice, the usual reason for determining power before conducting a study is_______. -
(answer)to know how large the study has to be to get that desired effect
What are a few different ways to increase statistical power? - (answer)-more people
-one tailed test
-larger effect size
-repeated measures design
Difference scores are computed for____. - (answer)Dependent t-test
One sample t-test - (answer)comparing the sample and population means
Dependent measures t-test - (answer)difference scores from a single group of people
-how high someone can jump before and after training camp
Independent Samples T-test - (answer)comparing two means from two independent groups
-people who get their news from tv and people who get news from online
One Way ANOVA - (answer)comparing multiple means of several groups
-comparing groups in rehab on how many use drugs. week, month, year
Correlation - (answer)-temperature and attendance, if it is cold outside will students come to class
, STAT 211 FINAL EXAM LATEST QUESTIONS WITH 100% SOLVED ANSWERS!!
Conceptually what is the distribution of differences between means? Why is the mean equal to 0? -
(answer)Comparison distribution of independent samples t-test
What are the assumptions for t-tests? - (answer)-independence of scores
-normally distributed
-variances are the same
-the same independent variable
-random sampling
When the "independent scores" assumption of the t-test for independent means is violated, the
researcher should_____. - (answer)not do an independent samples t-test
In an analysis of variance, you reject the null hypothesis when the F ratio is___. - (answer)a lot larger
than 1
Why do we conduct planned contrasts in ANOVA? or why do we need more than our omnibus test? -
(answer)if F ratio doesn't give us enough info but doesn't give us where our scores lie
R^2 is never greater than_______. - (answer)1
If the correlation between two personality traits is .07, the correlation is considered a_________. -
(answer)weak, positive correlation
Low reliability of the variables reduces the correlation coefficient because__________. - (answer)adds
unnecessary noise
Why is it necessary that we use z-scores to calculate correlation? - (answer)z-score are standardized
Setting the significance level cutoff at .10 instead of the more usual .05 increases the likelihood of
a______. - (answer)Type 1 Error
One important advantage of using effect sizes is that_______. - (answer)it's standardized so we can use
it for multiple studies
In actual practice, the usual reason for determining power before conducting a study is_______. -
(answer)to know how large the study has to be to get that desired effect
What are a few different ways to increase statistical power? - (answer)-more people
-one tailed test
-larger effect size
-repeated measures design
Difference scores are computed for____. - (answer)Dependent t-test
One sample t-test - (answer)comparing the sample and population means
Dependent measures t-test - (answer)difference scores from a single group of people
-how high someone can jump before and after training camp
Independent Samples T-test - (answer)comparing two means from two independent groups
-people who get their news from tv and people who get news from online
One Way ANOVA - (answer)comparing multiple means of several groups
-comparing groups in rehab on how many use drugs. week, month, year
Correlation - (answer)-temperature and attendance, if it is cold outside will students come to class
, STAT 211 FINAL EXAM LATEST QUESTIONS WITH 100% SOLVED ANSWERS!!
Conceptually what is the distribution of differences between means? Why is the mean equal to 0? -
(answer)Comparison distribution of independent samples t-test
What are the assumptions for t-tests? - (answer)-independence of scores
-normally distributed
-variances are the same
-the same independent variable
-random sampling
When the "independent scores" assumption of the t-test for independent means is violated, the
researcher should_____. - (answer)not do an independent samples t-test
In an analysis of variance, you reject the null hypothesis when the F ratio is___. - (answer)a lot larger
than 1
Why do we conduct planned contrasts in ANOVA? or why do we need more than our omnibus test? -
(answer)if F ratio doesn't give us enough info but doesn't give us where our scores lie
R^2 is never greater than_______. - (answer)1
If the correlation between two personality traits is .07, the correlation is considered a_________. -
(answer)weak, positive correlation
Low reliability of the variables reduces the correlation coefficient because__________. - (answer)adds
unnecessary noise
Why is it necessary that we use z-scores to calculate correlation? - (answer)z-score are standardized
