Questions: 15. In the Beard Experiment, was there a control? If so, which group was it? 16. In the Vitamin C experiment, was there a control? If so, which group was it?

To address the questions, let's consider the concept of a control group in experiments. A control group is a baseline group that does not receive the experimental treatment and is used for comparison to assess the effect of the treatment.

15. In the Beard Experiment, was there a control? If so, which group was it?

Without specific details about the Beard Experiment, it's challenging to definitively identify the control group. However, if the experiment involved comparing the effects of a treatment (e.g., a product or method) on beard growth, the control group would typically be the group that did not receive the treatment. This group would serve as a baseline to compare against the group(s) that did receive the treatment.

16. In the Vitamin C experiment, was there a control? If so, which group was it?

Similarly, without specific details about the Vitamin C experiment, we can only provide a general answer. In a typical Vitamin C experiment, the control group would be the group that does not receive Vitamin C supplementation. This group would be used to compare against the group(s) that do receive Vitamin C to determine its effects.

In summary, for both experiments, the control group is the one that does not receive the experimental treatment, serving as a baseline for comparison.