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

The mean of 5, 10, 15, and 20 is:
Answer: 12.5
The sum is 50 divided by 4 values equals 12.5.
Ordinal data differs from nominal data because ordinal data:
Answer: Has a meaningful order or ranking
Ordinal data has categories with a natural rank order.
A frequency table is used to:
Answer: Show how often each value occurs
A frequency table records the count of occurrences for each value or category.
Systematic sampling selects subjects by:
Answer: Choosing every kth member from a list
Systematic sampling picks every kth item after a random start.
Which best controls bias in data collection?
Answer: Random selection of participants
Random selection reduces systematic bias in who is sampled.
The interquartile range (IQR) measures:
Answer: The spread of the middle 50% of data
The IQR is the difference between the third and first quartiles, covering the middle 50%.
A bar graph is most appropriate for comparing:
Answer: Quantities across distinct categories
Bar graphs compare values across separate, distinct categories.