SAEE SAEE - Data Collection and Analysis Questions and Answers 2

Question 1

Which sampling method involves dividing a population into subgroups and then randomly selecting participants from each subgroup?

Accepted Answer

Stratified sampling

Answer

Stratified sampling divides the population into homogeneous subgroups (strata) and randomly samples from each to ensure representation.

Question 2

A researcher notices that as study hours increase, test scores also increase. What type of correlation does this represent?

Accepted Answer

Positive correlation

Answer

A positive correlation occurs when both variables move in the same direction — as one increases, the other also increases.

Question 3

What is the primary purpose of using a control group in an experimental study?

Accepted Answer

To provide a baseline for comparison against the treatment group

Answer

A control group serves as a baseline that does not receive the treatment, allowing researchers to measure the effect of the independent variable.

Question 4

Which measure of central tendency is most affected by extreme outliers in a data set?

Accepted Answer

Mean

Answer

The mean is calculated using all values in the data set, so extreme outliers can significantly pull it higher or lower.

Question 5

In a double-blind study, who is unaware of which participants are in the control or experimental group?

Accepted Answer

Both the researchers and the participants

Answer

In a double-blind study, neither the researchers administering the treatment nor the participants know who is receiving the actual treatment versus the placebo.

SAEE Test Practice Test

SAEE Test Practice Test

SAEE SAEE - Data Collection and Analysis Questions and Answers 2