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Data Visualization and Interpretation Flashcards

7 cards from real FAST 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 Visualization and Interpretation flashcards as text

  1. A stacked bar chart shows total monthly expenses divided into rent, food, and utilities. In March, the rent portion reaches $1,200 out of a $2,000 total bar. What percentage of March expenses went to rent?

    Answer: 60%

    1,200 ÷ 2,000 = 0.60, so rent accounts for 60% of March's total expenses.

  2. Two overlapping circles in a Venn diagram show 30 elements in the left-only region, 20 in the overlap, and 15 in the right-only region. How many total unique elements are represented?

    Answer: 65

    Total unique elements = 30 (left only) + 20 (overlap) + 15 (right only) = 65.

  3. A line chart displays three years of quarterly revenue. Q3 consistently shows the highest values each year. This pattern is best described as what?

    Answer: A seasonal pattern

    A recurring high point in the same quarter each year indicates a seasonal pattern — a predictable, repeating cycle tied to the time of year.

  4. On a pictograph, each symbol represents 50 items. A row shows 3.5 symbols. How many items does that row represent?

    Answer: 175

    3.5 symbols × 50 items per symbol = 175 items.

  5. A scatter plot's trend line (line of best fit) has a negative slope. A new data point falls far above the trend line. This point is best described as what?

    Answer: An outlier

    A point that falls far from the line of best fit does not follow the general trend and is classified as an outlier.

  6. A frequency table lists test scores in ranges: 60–69 (4 students), 70–79 (11 students), 80–89 (9 students), 90–99 (6 students). What is the relative frequency of the 70–79 range?

    Answer: 36.7%

    Total students = 30; relative frequency = 11/30 ≈ 0.367 = 36.7%.

  7. A bar chart has a broken y-axis that starts at 95 instead of 0, making a bar representing 99 appear four times taller than one representing 96. What is the primary risk of this presentation?

    Answer: It visually exaggerates differences between values

    A truncated y-axis amplifies visual differences, making small numerical differences appear much larger than they truly are.