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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 pie chart represents a budget. If transport costs 72° of the circle, what percentage of the budget is spent on transport?

    Answer: 20%

    Percentage = (72°/360°) × 100% = 20%.

  2. A line graph shows temperature falling from 28°C at noon to 16°C at midnight. What is the rate of change per hour over this 12-hour period?

    Answer: 1°C per hour decrease

    Change = −12°C over 12 hours; rate = −12/12 = −1°C per hour (decrease of 1°C/h).

  3. A table shows distances between cities. Cape Town to Johannesburg = 1 400 km; Johannesburg to Durban = 600 km. How far is Cape Town from Durban via Johannesburg?

    Answer: 2 000 km

    Total distance = 1 400 + 600 = 2 000 km.

  4. A bar chart shows learner numbers: Grade 10 = 300, Grade 11 = 250, Grade 12 = 200. What proportion of learners are in Grade 12?

    Answer: 26.7%

    Total = 750; Grade 12 proportion = 200/750 × 100% ≈ 26.7%.

  5. A stacked bar chart shows that in March, Category A = 40 units and Category B = 60 units, for a total of 100. What percentage is Category A?

    Answer: 40%

    Category A proportion = 40/100 × 100% = 40%.

  6. A scatter plot shows a strong positive correlation between study hours and test scores. What does this suggest?

    Answer: As study hours increase, test scores tend to increase

    A positive correlation means both variables tend to increase together, though correlation does not imply causation.

  7. A table of exchange rates shows: 1 USD = R18.50. How many US dollars can you get for R925?

    Answer: 50 USD

    R925 ÷ R18.50 per USD = 50 USD.