SAEE - Data Collection and Analysis Questions and Answers Flashcards
6 cards from real SAEE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 SAEE - Data Collection and Analysis Questions and Answers flashcards as text
Which sampling method involves dividing a population into subgroups and then randomly selecting participants from each subgroup?
Answer: Stratified sampling
Stratified sampling divides the population into homogeneous subgroups (strata) and randomly samples from each to ensure representation.
A researcher notices that as study hours increase, test scores also increase. What type of correlation does this represent?
Answer: Positive correlation
A positive correlation occurs when both variables move in the same direction — as one increases, the other also increases.
What is the primary purpose of using a control group in an experimental study?
Answer: To provide a baseline for comparison against the treatment group
A control group serves as a baseline that does not receive the treatment, allowing researchers to measure the effect of the independent variable.
Which measure of central tendency is most affected by extreme outliers in a data set?
Answer: Mean
The mean is calculated using all values in the data set, so extreme outliers can significantly pull it higher or lower.
In a double-blind study, who is unaware of which participants are in the control or experimental group?
Answer: Both the researchers and the participants
In a double-blind study, neither the researchers administering the treatment nor the participants know who is receiving the actual treatment versus the placebo.
A survey question that leads respondents toward a particular answer is an example of what type of bias?
Answer: Response bias
Response bias occurs when the wording or structure of a question influences participants to answer in a particular way.