BS Research Methods and Statistics 2

Question 1

What is the difference between qualitative and quantitative data?

Accepted Answer

Qualitative data describes categories; quantitative data uses numbers

Answer

Qualitative data involves non-numerical descriptions such as color or opinion, while quantitative data is expressed in measurable numerical values.

Question 2

Which sampling method ensures every member of a population has an equal chance of selection?

Accepted Answer

Simple random sampling

Answer

Simple random sampling gives every individual in the population an equal probability of being selected for the study.

Question 3

What is a double-blind study?

Accepted Answer

Neither the participants nor the researchers know who is in the treatment group

Answer

In a double-blind study, both participants and researchers are unaware of group assignments, minimizing bias.

Question 4

What does the term 'replication' mean in scientific research?

Accepted Answer

Repeating an experiment to verify results

Answer

Replication involves repeating experiments to confirm that results are reliable and not due to chance or error.

Question 5

Which statistical test is commonly used to compare the means of two independent groups?

Accepted Answer

Independent samples t-test

Answer

The independent samples t-test compares the means of two unrelated groups to determine if they differ significantly.

BS - Bachelor of Science Practice Test