| 130058 | Linear Equations · Exercise 7 | Medium | |
| 130059 | Linear Equations · Exercise 9 | Medium | |
| 130061 | Linear Equations · Exercise 11 | Medium | |
| 130065 | Linear Equations · Exercise 15 | Medium | |
| 130067 | Linear Equations · Exercise 17 | Medium | |
| 130079 | The Regression Equation · Exercise 4 | Medium | |
| 130081 | The Regression Equation · Exercise 6 | Medium | |
| 130083 | The Regression Equation · Exercise 8 | Medium | |
| 130085 | The Regression Equation · Exercise 10 | Medium | |
| 130104 | Prediction · Exercise 9 | Medium | |
| 130106 | Prediction · Exercise 11 | Medium | |
| 130111 | Prediction · Exercise 19 | Medium | |
| 130113 | Prediction · Exercise 21 | Medium | |
| 130115 | Prediction · Exercise 23 | Medium | |
| 130117 | Prediction · Exercise 25 | Medium | |
| 130130 | Outliers · Exercise 8 | Medium | |
| 130132 | Outliers · Exercise 10 | Medium | |
| 130134 | Outliers · Exercise 12 | Medium | |
| 130136 | Outliers · Exercise 14 | Medium | |
| 130138 | Outliers · Exercise 16 | Medium | |
| 130804 | The Correlation Coefficient r · Exercise 2 | Medium | |
| 130805 | The Correlation Coefficient r · Exercise 3 | Medium | |
| 130807 | The Correlation Coefficient r · Exercise 5 | Medium | |
| 130809 | The Correlation Coefficient r · Exercise 7 | Medium | |
| 130813 | Testing the Significance of the Correlation Coefficient · Exercise 1 | Medium | |
| 130814 | Testing the Significance of the Correlation Coefficient · Exercise 2 | Medium | |
| 130815 | Linear Equations · Exercise 1 | Medium | |
| 130818 | Linear Equations · Exercise 4 | Medium | |
| 130820 | The Regression Equation · Exercise 1 | Medium | |
| 130821 | The Regression Equation · Exercise 2 | Medium | |
| 130823 | Interpretation of Regression Coefficients: Elasticity and Logarithmic Transformation · Exercise 1 | Medium | |
| 130825 | Interpretation of Regression Coefficients: Elasticity and Logarithmic Transformation · Exercise 3 | Medium | |
| 130828 | Predicting with a Regression Equation · Exercise 1 | Medium | |
| 130829 | Predicting with a Regression Equation · Exercise 2 | Medium | |
| 131919 | Linear Equations · Exercise 9 | Medium | |
| 131923 | Linear Equations · Exercise 17 | Medium | |
| 131926 | The Regression Equation · Exercise 1 | Medium | |
| 131927 | The Regression Equation · Exercise 11 | Medium | |
| 131928 | The Regression Equation · Exercise 13 | Medium | |
| 131939 | Prediction (Optional) · Exercise 8 | Medium | |
| 131941 | Prediction (Optional) · Exercise 10 | Medium | |
| 131947 | Prediction (Optional) · Exercise 18 | Medium | |
| 131949 | Prediction (Optional) · Exercise 20 | Medium | |
| 131951 | Prediction (Optional) · Exercise 22 | Medium | |
| 131953 | Prediction (Optional) · Exercise 24 | Medium | |
| 131958 | Outliers · Exercise 1 | Medium | |
| 131961 | Outliers · Exercise 8 | Medium | |
| 131963 | Outliers · Exercise 10 | Medium | |
| 131965 | Outliers · Exercise 12 | Medium | |
| 131967 | Outliers · Exercise 14 | Medium | |