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CMAS Data Interpretation and Analysis Flashcards

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

Read the first 6 CMAS Data Interpretation and Analysis flashcards as text

  1. A frequency table shows that 10 students scored 70–79, 15 scored 80–89, and 5 scored 90–99. What percentage of students scored 80 or above?

    Answer: 67%

    Students scoring 80 or above: 15 + 5 = 20; total students: 10 + 15 + 5 = 30; 20/30 = 66.7% ≈ 67%.

  2. What does the interquartile range (IQR) measure in a data set?

    Answer: The spread of the middle 50% of the data

    The IQR is calculated as Q3 – Q1 and represents the spread of the middle 50% of the data, making it resistant to outliers.

  3. A histogram shows the distribution of test scores. If the bars are tallest in the middle and shorter at both ends, what shape is the distribution?

    Answer: Bell-shaped (symmetric)

    A bell-shaped distribution has the tallest bars in the middle and shorter bars tapering symmetrically on both sides.

  4. A student records the daily high temperatures for a week: 72, 75, 68, 80, 77, 73, 79. What is the range of this data?

    Answer: 12

    Range = maximum – minimum = 80 – 68 = 12.

  5. Which type of graph would best display the proportion of a school's budget allocated to different departments?

    Answer: Pie chart

    A pie chart shows how a whole is divided into parts, making it ideal for displaying proportions or percentages of a total.

  6. In a box-and-whisker plot, where is the median represented?

    Answer: By the vertical line inside the box

    In a box-and-whisker plot, the median (Q2) is shown by the vertical line drawn inside the rectangle of the box.