Question

the table shows results of an experiment that was replicated. which best describes the data? correct value: 12.75 experiment 1 8.5 experiment 2 8.4 experiment 3 8.4 experiment 4 8.3 they are precise and reproducible. they are precise but not reproducible. they are accurate and reproducible. they are accurate but not reproducible.

Explanation:

Precision refers to how close measured values are to each other. Here, the values 8.5, 8.4, 8.4, 8.3 are close to one another, indicating precision. Reproducibility means getting similar results in repeated experiments, which is the case here. Accuracy is how close a measured value is to the true value. The true value is 12.75 and the measured values are around 8.4, so they are not accurate.

Answer:

They are precise and reproducible.