Data Collection and Analysis Flashcards
7 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 7 Data Collection and Analysis flashcards as text
Which sampling method gives every member of a population an equal chance of being selected?
Answer: Simple random sampling
Simple random sampling ensures each population member has an equal selection probability.
A data set has values 4, 8, 8, 10, 20. What is the median?
Answer: 8
The median is the middle value when data is ordered, which is 8.
Which graph type is best for showing the proportion of parts to a whole?
Answer: Pie chart
A pie chart displays each category as a slice of the total.
What does a correlation coefficient of -0.9 indicate?
Answer: Strong negative relationship
A value near -1 indicates a strong negative (inverse) linear relationship.
Which measure of central tendency is most affected by an extreme outlier?
Answer: Mean
The mean is pulled toward outliers because it uses every value.
Primary data is best described as data that is:
Answer: Collected firsthand by the researcher
Primary data is gathered directly by the researcher for the specific study.
A histogram is most appropriate for displaying:
Answer: The frequency distribution of continuous data
Histograms show how often values fall within continuous intervals.