- 1 for correct data from the twd variables on the x and Y axes b. Calculate the mean and standard deviation for the two variables sepa ratelv. [4 points total: 1 point for
each mean and 1 point for each SD, deduct .5 if an answer is in correct but the calculation process was
correct] c. Calculate the 2 scores for all the scores of the two variables, separately. [4 points total: 2 for the 2
scores for each variable, deduct .5 for each error in the 2 scores up to a total of 2 per variable} iTps: timely heir: to prevent error ondmincreose clarity tithe process earlier the answers {2 semsj
are Esteem o table foam. d. Calculate Pearson’s correlation coefficient r. {2 points total: 1 it the process is correct but the answer
is wro ng] e. Explain the direction and strength ofthe relationship based on the r. :2 points total: 1 for strength, 1
for direction] f. What is the proportion of variance shared between the two variables? [That Is, how much of the
variance in one variable can be predicted bv the variance In the other variable?) [2 points total: 1 if the
process is correct but the answer is wrong} W230 SummerBZDlE a. If the researcher wants to perlomt a mtailed hvpothesls test using this data set so that she can
generalixe the relationship between the two variables from the sample to the population, what would
be the null and altemative hypothesis? Write the hypotheses In words and In svntbol notation. {2 points
total: 1 for each hypothesis, .5 for written, .5 for symbol notation} h. Using SPSS to analvze the same dataset 1.rlelds a p value of .01. Based on o = .05, what would be the
conclusion of the hypothesis test [use wording of "reject the null hypothesis" or "fail to reject the null
hypothesis"? How do vou know? {1 point total: .5 for conclusion, .5 for rationale] Extra Credit Question 11 pointj
Explain the meaning of p = .01 In Q2h above, In your own words. Explain whv the p value allows us to
determine the signiﬁcance of a hypothesis test. [.5 for each answer]