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Data Interpretation and Graphs Flashcards

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

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  1. A frequency table shows: Red=12, Blue=8, Green=15, Yellow=5. What fraction of students chose Red?

    Answer: 12/40

    Total = 12+8+15+5 = 40; Red fraction = 12/40 = 3/10 (both 12/40 and 3/10 are equivalent, but 12/40 is the direct answer).

  2. A line graph shows temperatures dropping from 70°F at noon to 55°F at midnight. What was the average rate of decrease per hour over 12 hours?

    Answer: 1.25°F/hr

    (70 − 55) ÷ 12 = 15 ÷ 12 = 1.25°F per hour.

  3. A bar graph shows students enrolled per grade. Grade 3 has twice as many students as Grade 6. If Grade 6 has 45 students, how many are in Grade 3?

    Answer: 90

    Twice 45 = 90 students in Grade 3.

  4. A pie chart is divided into 4 equal sections. What percent does each section represent?

    Answer: 25%

    100% ÷ 4 equal sections = 25% each.

  5. A table lists five quiz scores: 88, 76, 94, 88, 74. What is the mode?

    Answer: 88

    88 appears twice, more than any other score, making it the mode.

  6. A graph's x-axis is labeled 'Hours Studied' and the y-axis is labeled 'Test Score.' A student studies 0 hours and scores 40. A student studies 5 hours and scores 90. What does the graph most likely show?

    Answer: Scores increase as study time increases

    The score rises from 40 to 90 as study hours increase from 0 to 5, showing a positive relationship.

  7. A stem-and-leaf plot shows stems 4, 5, 6 with leaves 4|2,7 and 5|1,5,9 and 6|3. How many data values are in the 50s?

    Answer: 3

    Stem 5 has leaves 1, 5, 9 — three values: 51, 55, 59.