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NBT Quantitative Literacy: Charts, Tables and Graphs Flashcards

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

Read the first 7 NBT Quantitative Literacy: Charts, Tables and Graphs flashcards as text

  1. A line graph shows electricity usage: Month 1 = 300 kWh, Month 2 = 350 kWh, Month 3 = 280 kWh. In which month was usage the lowest?

    Answer: Month 3

    Month 3 at 280 kWh is the lowest value among the three months.

  2. A pie chart shows 5 categories. If one category represents 90°, how many of this sector fit in the full pie?

    Answer: 4

    360° ÷ 90° = 4 sectors of this size fit in a full circle.

  3. A table records rainfall (mm): Mon 12, Tue 8, Wed 0, Thu 15, Fri 5. What is the mean daily rainfall?

    Answer: 8 mm

    Total = 40 mm; mean = 40/5 = 8 mm per day.

  4. A misleading graph uses a y-axis that starts at 950 instead of 0. A bar representing 1 000 looks twice as tall as one representing 960. What is the actual percentage difference between them?

    Answer: Approximately 4%

    Actual difference = 1 000 − 960 = 40; percentage = 40/960 × 100% ≈ 4.2%, not the visual 100%.

  5. A grouped frequency table shows scores: 40–49 (5 learners), 50–59 (12 learners), 60–69 (8 learners). How many learners scored below 60?

    Answer: 17

    Learners in 40–49 and 50–59 = 5 + 12 = 17 learners scored below 60.

  6. A bar chart shows that Store X sold 240 items and Store Y sold 180 items. What is the ratio of Store X sales to Store Y sales?

    Answer: 4 : 3

    240 : 180 = 4 : 3 (divide both by 60).

  7. A graph shows that a car travels at a constant speed. The distance at 2 hours is 160 km and at 5 hours is 400 km. What is the speed?

    Answer: 80 km/h

    Speed = distance/time = 160 km/2 h = 80 km/h (confirmed by 400/5 = 80 km/h).