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Data Analysis and Statistics Flashcards

6 cards from real AST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Data Analysis and Statistics flashcards as text

  1. A data set has values: 4, 8, 6, 10, 12. What is the mean?

    Answer: 8

    (4 + 8 + 6 + 10 + 12) / 5 = 40 / 5 = 8.

  2. In a normal distribution, approximately what percentage of data falls within one standard deviation of the mean?

    Answer: 68%

    The empirical rule states approximately 68% of data falls within ±1 standard deviation.

  3. If a bar chart shows sales of $200, $350, $150, and $300 for four quarters, what were the total annual sales?

    Answer: $1,000

    200 + 350 + 150 + 300 = $1,000.

  4. A pie chart shows 40% for category A, 35% for B, and the rest for C. What percentage is C?

    Answer: 25%

    100% - 40% - 35% = 25%.

  5. In a data set of 9 numbers sorted in ascending order, which position is the median?

    Answer: 5th

    For n = 9, the median is at position (9+1)/2 = 5th.

  6. A probability experiment is run 400 times. Event A occurs 100 times. What is the experimental probability of A?

    Answer: 0.25

    P(A) = 100/400 = 0.25.

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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

  1. bsss.act.edu.au — Eligibility, exam format, passing score · verified Oct 2026
  2. bsss.act.edu.au — Test delivery, late registration, retake policy · verified Oct 2026