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Line Chart Test — Questions and Answers

A timed line-chart set. Because line charts plot movement over time, the questions cluster around growth, decline, turning points and crossovers rather than single readings. Work with the differences between consecutive points rather than the absolute heights and most questions resolve quickly.

14 solved questionsData Interpretation TestFree · no signup

Line Chart Test— Concepts, Formulas & Shortcuts

  • Slope indicates the rate of change; steeper means faster.
  • Compute consecutive differences once and reuse them.
  • A crossing point marks equality between two series.
  • Falling values are still positive unless the axis goes below zero.
  • Percentage change divides by the earlier value.
  • Watch for a truncated y-axis that exaggerates small changes.

Line Chart Test Practice Questions with Answers

Attempt each question first, then open the explanation. All 14 questions below are free to read and require no signup.

  1. Q1.A line chart shows annual production (tonnes): 2021=500, 2022=600, 2023=550, 2024=700, 2025=800. Total production over five years was:

    Easy
    • A3,000
    • B3,150
    • C3,250
    • D3,300
    +Show Answer & Explanation

    Answer: B. 3,150

    Explanation: 500 + 600 + 550 + 700 + 800 = 3,150 tonnes.

    Line Chart Test question 1 of 14

  2. Q2.Using the same chart, in which year did production decline?

    Easy
    • A2022
    • B2023
    • C2024
    • D2025
    +Show Answer & Explanation

    Answer: B. 2023

    Explanation: 2023 fell to 550 from 600 in 2022.

    Line Chart Test question 2 of 14

  3. Q3.Using the same chart, the largest year-on-year increase occurred in:

    Moderate
    • A2022
    • B2023
    • C2024
    • D2025
    +Show Answer & Explanation

    Answer: C. 2024

    Explanation: Changes are +100, −50, +150 and +100 → 2024 has the largest rise.

    Line Chart Test question 3 of 14

  4. Q4.Using the same chart, the percentage growth from 2021 to 2025 is:

    Moderate
    • A50%
    • B60%
    • C70%
    • D80%
    +Show Answer & Explanation

    Answer: B. 60%

    Explanation: (800 − 500)/500 × 100 = 60%.

    Line Chart Test question 4 of 14

  5. Q5.Using the same chart, the average annual production was:

    Easy
    • A600
    • B630
    • C650
    • D680
    +Show Answer & Explanation

    Answer: B. 630

    Explanation: 3,150/5 = 630 tonnes.

    Line Chart Test question 5 of 14

  6. Q6.Using the same chart, 2025 production as a percentage of the five-year total is approximately:

    Moderate
    • A21%
    • B25%
    • C28%
    • D32%
    +Show Answer & Explanation

    Answer: B. 25%

    Explanation: 800/3,150 × 100 ≈ 25.4%.

    Line Chart Test question 6 of 14

  7. Q7.On a line chart, the steepest upward segment indicates:

    Moderate
    • AThe highest value
    • BThe fastest rate of increase
    • CThe lowest value
    • DNo change
    +Show Answer & Explanation

    Answer: B. The fastest rate of increase

    Explanation: Slope represents rate of change, so the steepest rising segment is the fastest growth — not necessarily the highest value.

    Line Chart Test question 7 of 14

  8. Q8.If two plotted lines, Imports and Exports, cross in 2024, then in that year:

    Easy
    • AImports peaked
    • BExports peaked
    • CImports equalled exports
    • DTrade stopped
    +Show Answer & Explanation

    Answer: C. Imports equalled exports

    Explanation: An intersection means the two quantities were equal at that point.

    Line Chart Test question 8 of 14

  9. Q9.A line chart shows sales (₹ lakh): 2021=10, 2022=15, 2023=12, 2024=20, 2025=25. Total sales were:

    Easy
    • A₹78 lakh
    • B₹80 lakh
    • C₹82 lakh
    • D₹85 lakh
    +Show Answer & Explanation

    Answer: C. ₹82 lakh

    Explanation: 10 + 15 + 12 + 20 + 25 = ₹82 lakh.

    Line Chart Test question 9 of 14

  10. Q10.Using the same chart, in which year did sales fall?

    Easy
    • A2022
    • B2023
    • C2024
    • D2025
    +Show Answer & Explanation

    Answer: B. 2023

    Explanation: 2023 fell to ₹12 lakh from ₹15 lakh in 2022.

    Line Chart Test question 10 of 14

  11. Q11.Using the same chart, the percentage growth from 2021 to 2025 is:

    Moderate
    • A100%
    • B125%
    • C150%
    • D175%
    +Show Answer & Explanation

    Answer: C. 150%

    Explanation: (25 − 10)/10 × 100 = 150%.

    Line Chart Test question 11 of 14

  12. Q12.Using the same chart, the average annual sales figure was:

    Moderate
    • A₹15.4 lakh
    • B₹16.4 lakh
    • C₹17.2 lakh
    • D₹18 lakh
    +Show Answer & Explanation

    Answer: B. ₹16.4 lakh

    Explanation: 82/5 = ₹16.4 lakh.

    Line Chart Test question 12 of 14

  13. Q13.Using the same chart, the largest year-on-year increase was:

    Moderate
    • A₹5 lakh
    • B₹6 lakh
    • C₹8 lakh
    • D₹10 lakh
    +Show Answer & Explanation

    Answer: C. ₹8 lakh

    Explanation: Changes are +5, −3, +8 and +5 → the largest rise is ₹8 lakh, from 2023 to 2024.

    Line Chart Test question 13 of 14

  14. Q14.Using the same chart, 2025 sales as a share of the five-year total are approximately:

    Moderate
    • A25%
    • B30%
    • C33%
    • D38%
    +Show Answer & Explanation

    Answer: B. 30%

    Explanation: 25/82 × 100 ≈ 30.5%.

    Line Chart Test question 14 of 14

Line Chart Test — Frequently Asked Questions

What kinds of questions do line-chart sets favour?+

Trend questions — maximum increase, maximum decline, first year of growth, and the point where two series cross. Single-value readings are comparatively rare.

How do I find the year of maximum growth quickly?+

Write the consecutive differences under the chart in one pass, then scan them. Recomputing per question is the main time sink in line-chart sets.

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