| Batch yield and purity | The two columns in the data set are: the percentage yield from a batch reactor, and the purity of the feedstock.
The feedstock is what we add to the reactor, and the yield is measured after the reaction is completed.
The cause-and-effect direction is that the purity of the feedstock has (potential) impact on the yield. | 241 | 2 | multivariateregressionleast-squares |
| Unlimited time test | The grades from a midterm exam, as well as the time taken by the student to write the exam. It was an "infinite" time midterm, so there was no time pressure to finish within the allocated period. | 80 | 2 | univariateregressionleast-squares |
| Unlimited time test 2 | The grades from a midterm exam, as well as the time taken by the student to write the exam. It was an "infinite" time midterm, so there was no time pressure to finish within the allocated period. The test results were from 2013. | 61 | 2 | univariateregressionleast-squares |
| Unlimited time test 3 | The grades from a midterm exam, as well as the time taken by the student to write the exam. It was an "infinite" time midterm, so there was no time pressure to finish within the allocated period. The test results were from 2013. | 89 | 2 | univariateregressionleast-squares |