The document contains multiple exercises focused on statistical analysis and regression. Here’s a breakdown of the problems included:

1. Exercise 1 (12-7):

• Comparison of language skills between single children, twins, and triplets.
• Tasks:
  • Perform ANOVA to check for significant differences.
  • Compute effect size ($\eta^2$).

2. Exercise 2 (12-9):

• Comparing the effectiveness of three therapy techniques for phobias.
• Tasks:
  • Conduct ANOVA for differences among therapies.

3. Exercise 3 (12-13):

• Complete missing ANOVA table values for an experiment with four treatment conditions.

4. Exercise 4 (12-21):

• Sociability scores comparison across three body types.
• Task:
  • Conduct ANOVA to find significant differences.

5. Exercise 5 (17-1):

• Graphing two linear equations and analyzing slope coefficients.

6. Exercise 6 (17-3):

• Correlation and regression for a dataset with $n = 20$ pairs.
• Tasks:
  • Compute Pearson correlation.
  • Find regression equation.

7. Exercise 7 (17-4):

• Regression predictions using $ỹ = 2x - 7$.

8. Exercise 8 (17-7):

• Linear regression for a small dataset.
• Tasks:
  • Find regression equation.
  • Compute predictions and residuals.

9. Exercise 9 (17-8):

• Multiple regression tasks for a dataset:
  • Find regression equation.
  • Calculate predicted values.
  • Compute SSres and Pearson correlation.

10. Exercise 10 (17-10):

• Regression equation determination for given data.

Let me know which specific problem(s) you would like to solve or discuss!