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Data Analysis, Statistics & Probability Flashcards

7 cards from real SC READY 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 Analysis, Statistics & Probability flashcards as text

  1. A class recorded the number of books read by each student in a month: 2, 5, 3, 7, 5, 4, 5. What is the mode of this data set?

    Answer: 5

    The mode is 5 because it appears three times, more than any other value in the data set.

  2. A student scored 72, 85, 90, 68, and 95 on five tests. What is the mean (average) score?

    Answer: 82

    Adding the scores gives 410, and dividing by 5 tests gives a mean of 82.

  3. A bag contains 4 red marbles, 3 blue marbles, and 3 green marbles. What is the probability of randomly selecting a blue marble?

    Answer: 3/10

    There are 3 blue marbles out of 10 total marbles (4+3+3=10), so the probability is 3/10.

  4. The daily high temperatures for one week were: 78, 82, 75, 90, 82, 79, 85. What is the range of these temperatures?

    Answer: 15

    The range is calculated by subtracting the minimum (75) from the maximum (90): 90 − 75 = 15.

  5. A line graph shows a store's sales rising from January through June, then dropping sharply in July. What does this pattern most likely indicate?

    Answer: Sales peaked in June and then declined

    A rise followed by a sharp drop indicates sales reached their highest point in June and decreased in July.

  6. Students surveyed their classmates about favorite sports. The results were: Soccer 12, Basketball 8, Baseball 5, Swimming 5. What fraction of students chose Soccer?

    Answer: 2/5

    Total students = 12+8+5+5 = 30; Soccer fraction = 12/30 = 2/5.

  7. A spinner has 8 equal sections numbered 1 through 8. What is the probability of landing on an even number?

    Answer: 1/2

    Even numbers on the spinner are 2, 4, 6, and 8 — that is 4 out of 8 sections, which equals 1/2.

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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. ed.sc.gov — Test delivery, eligibility, passing score, test dates, time limit, exam information · verified Nov 2026
  2. wbte.drcedirect.com — Test delivery · verified Oct 2026