Question
1.Lara scored 94% on her geography midterm, and the class average was 82%. What would her deviation and z score be in a distribution of
1.Lara scored 94% on her geography midterm, and the class average was 82%. What would her deviation and z score be in a distribution of the midterm grades?
a.It would be positive
b.It would be negative
c.It would be -1
d.It would be 0
2.Ron has been working hard on a study and has determined that the sum of squared error is 451.7 and the sample size is 18 but cannot remember how to determine the average error around the regression line. You offer to help out and determine that the standard error of the estimate is:
a.5.01
b.4.89
c.5.25
d.5.64
3.Griffin scored 2 on a scale measuring depression. Their predicted score is 5.7. What is the error?
a.7.7
b.5.7
c.-3.7
d.3.7
4.The critical value for the chi-square statistic based on an alpha of 0.05 and 6 degrees of freedom is 12.592. Based on your work, you calculated a chi-square of 10.927 and therefore you conclude that you:
a.Need more information to make a conclusion
b.Reject the null hypothesis
c.Reject the research hypothesis
d.Fail to reject the null hypothesis
5.If you were a researcher, which of the following statistical results would lead you to reject the null hypothesis?
a.t(5) = 2.12,p> 0.05
b.t(5) = 2.51,p= 0.07
c.t(5) = 2.02,p= 0.10
d.t(5) = 2.23,p< 0.05
6.You are assisting your friend with a stats problem. Your friend tells you that the sum of squares for the predictor variable is 10, the sum of squares for the outcome variable is 12, and the slope is 2 but they aren't sure how to calculate the standardized regression coefficient. You do the calculation and tell them that the correct answer is:
a.8.50
b.2.09
c.1.83
d.10
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