Distance perception (side-effect of drug)
The diagram shows that the differences in distribution between the control group and the new drug can be summarised numerically by their medians and either
Use the sliders to change the new drug's distribution.
The context is a pharmaceutical company that is in the final stages of testing a new drug that is effective at reducing high blood pressure. Some patients have however reported side effects — in particular some felt that their perception of distance had been affected.
An experiment was conducted to measure whether the ability to assess distance was worse for patients receiving the drug. A 'control' group of 20 male patients were not given any drug and another group of 20 was given the new drug. Each subject was asked to position himself 3 metres from a wall and the actual distance was recorded.