Page 1 of 3 This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Name: SPSS Worksheet 5: (Correlation) Instructions: Lesson 31 Exercise File 1 is located at the end of the chapter under the heading Exercises in your Green and Salkind textbook. Complete the exercise and then complete the worksheet below by filling in the blanks and answering the questions. H01: There is no significant relationship between instructor ratings and course ratings. Assumptions Assumption of Bivariate Outliers: Hint: Run a scatter plot between the predictor variable (x) and criterion variable (y). Look for \"extreme\" bivariate outliers. See Warner pp. 165- 166 and 169. Insert Graph or Table Here Fill in the blanks: Variables Instructor rating (x) Is the assumption of bivariate outliers tenable? Course rating (y) Assumption of Linearity: Hint: Run a scatter plot between the predictor variable (x) and criterion variable (y). Add line of fit. See Warner p. 267- 268. Insert Graph or Table Here Fill in the blanks: Variables Instructor rating (x) Is the assumption of linearity met? Course rating (y) Assumption of Bivariate Normal Distribution: Hint: Run a scatter plot between the predictor variable (x) and criterion variable (y) and look for the classic \"cigar shape\" (Same as above without the line of fit). See Warner p. 169. Page 2 of 3 This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Insert Graph or Table Here Fill in the blanks: Variables Instructor rating (x) Is the assumption of bivariate normal distribution for X and Y met? Course rating (y) Results Insert Correlations table(s) below: Insert Graph or Table Here Fill in the blanks: Correlation r Value d.f. p- value Is the p- value less than .05? Answer: Is the correlation statistically significant? Answer: Should you reject or fail to reject the null? Hint: If p < .05 then reject. Answer: Page 3 of 3 This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 What is the effect size of r (small, medium, or large)? Hint: See Table 5.2 in Warner, p. 208. Answer: Is the relationship positive or negative? Answer: Descriptive Statistics Fill in the blanks: Variables Instructor rating Course rating Mean S.D. This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 1 of 3 Name: SPSS Worksheet 2: (ANOVA) Instructions: Lesson 25 Exercise File 1 is located at the end of the chapter under the heading Exercises in your Green and Salkind textbook. Complete the exercise and then complete the worksheet below by filling in the blanks and answering the questions. H01: There is no significant difference in the amount of extrovertednesss among blondes, brunettes, and redheads. Assumptions Outliers: Create a Box and Whisker plot for each group. Hint: Graph > Legacy > Boxplot > Simple. Insert the Box and Whisker plot below: Note: Look for extreme outliers. Insert Graph or Table Here Fill in the blanks: Groups Outliers (Item #) Are there any outliers? Blonde Brunet Redhead < Note: Remove any outliers from the dataset before continuing.> Assumption of Normality: Run a normality test for each group. Insert Tests of Normality table below: This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 2 of 3 Insert Graph or Table Here Fill in the blanks: Should you use a Shapiro-Wilks or Kolmogorov-Smirnov test? Why? Answer: Groups Significance Is the assumption of normality met? Blonde Brunet Redhead Assumption of Equal Variance: Insert Levene's Test of Equality of Error Variancesa table(s) below: Insert Graph or Table Here Fill in the blanks: Significance Is the assumption of equal variance met? Results Insert Tests of Between-Subjects Effects table(s) below: Insert Graph or Table Here This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 3 of 3 Fill in the blanks: Value d.f. between Groups d.f. within Groups F-statistic F-critical (Hint: See Appendix C in Warner) p- value Partial Eta Squared Is the F- statistic greater than F-critical? Answer: Is the p- value less than .05? Answer: Should you reject or fail to reject the null? Answer: Is the effect size small, medium, or large? Hint: See Table 5.2 in Warner, p. 208. Answer: Should you run post hoc analysis? Answer: Descriptive Statistics Groups Blonde Brunet Redhead Mean S.D. This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 1 of 4 Name: Jessica Chenoweth SPSS Worksheet 1: (t-test) Instructions: Lesson 24 Exercise File 1 is located at the end of the chapter under the heading Exercises in your Green and Salkind textbook. Complete the exercise and then complete the worksheet below by filling in the blanks and answering the questions. H01: There is no significant difference in the amount of time it takes to eat a Big Mac meal between overweigh and normal weight individuals. Assumptions Outliers: Create a Box and Whisker plot for each group. Hint: Graph > Legacy > Boxplot > Simple. Insert the Box and Whisker plot below: Note: Look for extreme outliers. Fill in the blanks: Groups Overweight Outliers (Item #) Are there any outliers? No This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 2 of 4 Normal No Assumption of Normality: Run a normality test for each group. Hint: Begin by going to Analyze > Descriptive > Explore. See SPSS lesson 40, p. 327. Insert the Tests of Normality table below: Tests of Normality Kolmogorov-Smirnova Weight classification Time spent eating Big overweight Mac specials in seconds normal weight Statistic .237 .085 df Shapiro-Wilk Sig. Statistic df Sig. 10 .116 .907 10 .258 30 * .982 30 .871 .200 *. This is a lower bound of the true significance. a. Lilliefors Significance Correction Fill in the blanks: Should you use a Shapiro-Wilks or Kolmogorov-Smirnov test? Why? Answer: For this particular normality test it would be more beneficial to utilize a Shapiro-Wilks test, due to the fact that the population mean and variance are unknown and the sample size is small. Groups Significance Overweight Is the assumption of normality met? Yes .258 Normal Yes .871 Assumption of Equal Variance: Insert Levene's Test of Equality of Error Variancesa table(s) below: This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 3 of 4 Fill in the blanks: Significance 0.106 Is the assumption of equal variance met? Yes Results Insert t-test for equality of Means table(s) below: Fill in the blanks: Equal variances assumed d.f. Value 38 t- statistic -3.975 t- critical (Hint: See Appendix B in Warner) 2.024 p- value 0.000 Eta Squared (Hint: See formula) 0.2937 Is the t-statistic greater than t-critical? Hint: Use the absolute value. Answer: Yes This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 4 of 4 Is the p-value less than .05? Answer: Yes Should you reject or fail to reject the null? Answer: Reject the null Is the effect size small, medium, or large? Hint: See Table 5.2 in Warner, p. 208. Answer: Small Descriptive Statistics Fill in the blanks: Groups Overweight Mean S.D. 589.00 42.615 698.40 82.949 Normal This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 1 of 4 Name: Jessica Chenoweth SPSS Worksheet 1: (t-test) Instructions: Lesson 24 Exercise File 1 is located at the end of the chapter under the heading Exercises in your Green and Salkind textbook. Complete the exercise and then complete the worksheet below by filling in the blanks and answering the questions. H01: There is no significant difference in the amount of time it takes to eat a Big Mac meal between overweigh and normal weight individuals. Assumptions Outliers: Create a Box and Whisker plot for each group. Hint: Graph > Legacy > Boxplot > Simple. Insert the Box and Whisker plot below: Note: Look for extreme outliers. Fill in the blanks: Groups Overweight Outliers (Item #) Are there any outliers? No This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 2 of 4 Normal No Assumption of Normality: Run a normality test for each group. Hint: Begin by going to Analyze > Descriptive > Explore. See SPSS lesson 40, p. 327. Insert the Tests of Normality table below: Tests of Normality Kolmogorov-Smirnova Weight classification Time spent eating Big overweight Mac specials in seconds normal weight Statistic .237 .085 df Shapiro-Wilk Sig. Statistic df Sig. 10 .116 .907 10 .258 30 * .982 30 .871 .200 *. This is a lower bound of the true significance. a. Lilliefors Significance Correction Fill in the blanks: Should you use a Shapiro-Wilks or Kolmogorov-Smirnov test? Why? Answer: For this particular normality test it would be more beneficial to utilize a Shapiro-Wilks test, due to the fact that the population mean and variance are unknown and the sample size is small. Groups Significance Overweight Is the assumption of normality met? Yes .258 Normal Yes .871 Assumption of Equal Variance: Insert Levene's Test of Equality of Error Variancesa table(s) below: This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 3 of 4 Fill in the blanks: Significance 0.106 Is the assumption of equal variance met? Yes Results Insert t-test for equality of Means table(s) below: Fill in the blanks: Equal variances assumed d.f. Value 38 t- statistic -3.975 t- critical (Hint: See Appendix B in Warner) 2.024 p- value 0.000 Eta Squared (Hint: See formula) 0.2937 Is the t-statistic greater than t-critical? Hint: Use the absolute value. Answer: Yes This worksheet was developed by Dr. Kurt Michael of Liberty University 2015 Page 4 of 4 Is the p-value less than .05? Answer: Yes Should you reject or fail to reject the null? Answer: Reject the null Is the effect size small, medium, or large? Hint: See Table 5.2 in Warner, p. 208. Answer: Small Descriptive Statistics Fill in the blanks: Groups Overweight Mean S.D. 589.00 42.615 698.40 82.949 Normal