| 131857 | Test of Independence · Exercise 6 | Medium | |
| 131859 | Test of Independence · Exercise 8 | Medium | |
| 131861 | Test of Independence · Exercise 10 | Medium | |
| 131863 | Test of Independence · Exercise 12 | Medium | |
| 131865 | Test of Independence · Exercise 14 | Medium | |
| 131866 | Test of Independence · Exercise 15 | Medium | |
| 131867 | Test of Independence · Exercise 16 | Medium | |
| 131870 | Test of Independence · Exercise 20 | Medium | |
| 131871 | Test of Independence · Exercise 21 | Medium | |
| 131872 | Test of Independence · Exercise 23 | Medium | |
| 131873 | Test of Independence · Exercise 24 | Medium | |
| 131874 | Test of Independence · Exercise 25 | Medium | |
| 131875 | Test of Independence · Exercise 27 | Medium | |
| 131876 | Test of Independence · Exercise 28 | Medium | |
| 131877 | Test of Independence · Exercise 31 | Medium | |
| 131878 | Test of Independence · Exercise 33 | Medium | |
| 131880 | Test of Independence · Exercise 35 | Medium | |
| 131885 | Test for Homogeneity · Exercise 4 | Medium | |
| 131886 | Test for Homogeneity · Exercise 10 | Medium | |
| 131888 | Test for Homogeneity · Exercise 12 | Medium | |
| 131890 | Test for Homogeneity · Exercise 14 | Medium | |
| 131892 | Test for Homogeneity · Exercise 16 | Medium | |
| 131893 | Test of a Single Variance · Example 2 | Easy | |
| 131894 | Test of a Single Variance · Try It 2 | Easy | |
| 131896 | Test of a Single Variance · Exercise 2 | Medium | |
| 131898 | Test of a Single Variance · Exercise 10 | Medium | |
| 131899 | Test of a Single Variance · Exercise 11 | Medium | |
| 131900 | Test of a Single Variance · Exercise 12 | Medium | |
| 131901 | Test of a Single Variance · Exercise 13 | Medium | |
| 131902 | Test of a Single Variance · Exercise 14 | Medium | |
| 131903 | Test of a Single Variance · Exercise 15 | Medium | |
| 131904 | Test of a Single Variance · Exercise 16 | Medium | |
| 131905 | Test of a Single Variance · Exercise 17 | Medium | |
| 131907 | Test of a Single Variance · Exercise 19 | Medium | |
| 131908 | Test of a Single Variance · Exercise 20 | Medium | |
| 131909 | Test of a Single Variance · Exercise 21 | Medium | |
| 131910 | Test of a Single Variance · Exercise 22 | Medium | |
| 131911 | Test of a Single Variance · Exercise 23 | Medium | |
| 131912 | Test of a Single Variance · Exercise 25 | Medium | |
| 131913 | Test of a Single Variance · Exercise 27 | Medium | |
| 131915 | Test of a Single Variance · Exercise 29 | Medium | |
| 131917 | Test of a Single Variance · Exercise 31 | Medium | |