BS Research Methods and Statistics

Question 1

What is a null hypothesis in scientific research?

Accepted Answer

A statement that there is no effect or relationship between variables

Answer

A prediction that an experiment will succeed

Answer

The primary hypothesis being tested

Answer

A hypothesis with no supporting data

Question 2

Which measure of central tendency is most affected by extreme outliers?

Accepted Answer

Mean

Answer

Median

Answer

Mode

Answer

Range

Question 3

What does a p-value less than 0.05 typically indicate?

Accepted Answer

The result is statistically significant

Answer

The experiment failed

Answer

The sample size was too small

Answer

The hypothesis is proven true

Question 4

What is the purpose of a control group in an experiment?

Accepted Answer

To provide a baseline for comparison against the experimental group

Answer

To introduce the independent variable

Answer

To randomize the sample selection

Answer

To eliminate the dependent variable

Question 5

Which type of research involves observing subjects in their natural environment without manipulation?

Accepted Answer

Naturalistic observation

Answer

Laboratory experiment

Answer

Case study

Answer

Survey research

Question 6

What is standard deviation used to measure?

Accepted Answer

The spread or dispersion of data around the mean

Answer

The highest value in a dataset

Answer

The relationship between two variables

Answer

The probability of an event occurring