Question

Read the scenario carefully then answer the questions that follow.
A drug company would like to market a new drug to those suffering from rheumatoid arthritis. To get approval for the drug, the company must show that the drug is effective for treating rheumatoid arthritis in a clinical trial. A random selection of 1,000 adults from each of the 50 states, giving a total of 50,000 adults, who suffer from rheumatoid arthritis are split into two groups where one receives the new drug and the other receives no drug. The groups are monitored for 6 months and joint mobility, measured in range of motion, is measured for all participants.

1. Sampling method:
2. Type of Study:
3. Type of data gathered:
4. Level of measurement of the data type:
5. Graph that can be used to display the data:

Answer 1

1.

The sampling method used here is clustered random sampling. The clusters here are the states, from where 1000 adults have been selected.

2

An experimental study is where you have a control group and a testable group. This is an experimental study where we have a testable group where people have been fed with the new drug and others where people are not.

3.

This can be collected from the website or an app, the information of the people who have these problems can be collected from either hospitals or from websites.

4.

The level of measurement here is ordinal. It is a case of comparing the effect of the drug with no drug.

5.

This information can be visualized better with a line graph, where it can be shown if the people taking it are increasing or decreasing as compared to the people who are not taking the drug.