Key facts

  • In the 2026 CET Graduation syllabus, this topic belongs to Logical Reasoning and Mathematics under graphical representation of data: graphs, bar chart...
  • Pie charts show parts of one whole: the full circle is 360 degrees and 100 percent, so sector value, sector percentage and sector angle can be convert...
  • Percentage change uses the original or stated base; a rise from 40 to 50 is 10 percentage points but 25 percent growth.

Key Points at a Glance

  1. 1

    In the 2026 CET Graduation syllabus, this topic belongs to Logical Reasoning and Mathematics under graphical representation of data: graphs, bar charts, pie charts and line graphs.

  2. 2

    Data interpretation must start with the title, unit, time period, base and legend; calculation before reading the data frame is a common source of wrong answers.

  3. 3

    Tables require exact row-column selection: totals, differences, ratios, percentages and averages all change when the denominator or included entries change.

  4. 4

    Bar charts compare categories through bar height or length; always read the axis scale before judging maximum, minimum, increase, decrease or average.

  5. 5

    Pie charts show parts of one whole: the full circle is 360 degrees and 100 percent, so sector value, sector percentage and sector angle can be converted when the total is known.

  6. 6

    Line graphs show change across time or an ordered scale; the trend gives direction, but the plotted points and axis interval give the answer.

  7. 7

    Percentage change uses the original or stated base; a rise from 40 to 50 is 10 percentage points but 25 percent growth.

  8. 8

    Combined DI sets must be converted to a common unit and common base before comparison; percentages from different totals cannot be compared directly.

Syllabus Scope and First Reading

This topic is in scope for CET Graduation Level because the current 2026 syllabus lists graphical representation of data: graphs, bar charts, pie charts, line graphs, etc., inside Logical Reasoning and Mathematics. That wording matters: the exam is not asking for advanced statistics, but for school-level quantitative reading applied to compact data displays. A candidate must be able to read a table, bar chart, pie chart or line graph, identify the given base, and then calculate accurately.

Data interpretation begins before arithmetic. First read the title, time period, unit, category labels, legend and any footnote. A table may show candidates in thousands, rupee amounts in crore, marks out of 100 or production in tonnes. A bar chart may show percentage growth rather than actual output. A pie chart may show share of expenditure, not the rupee value itself. If this frame is misunderstood, later arithmetic can be neat but still answer the wrong question.

Exam discipline: read the data display as a statement first, then treat it as numbers.

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