CAT Data Interpretation and Logical Reasoning Syllabus

Data Interpretation and Logical Reasoning syllabus — full chapter and topic list

Expand any chapter to see its topics and sub-topics. This is the whole examinable outline for Data Interpretation and Logical Reasoning in CAT, not a summary of it.

1. 1

   Data Interpretation

   5 topics

   • Tables
   • Bar Graphs
   • Line Charts
   • Pie Charts
   • Caselets
2. 2

   Logical Reasoning

   5 topics

   • Seating Arrangement
   • Blood Relations
   • Syllogisms
   • Logical Sequences
   • Puzzles
3. 3

   Data Sufficiency

   5 topics

   • Number-Based Problems
   • Algebra-Based Problems
   • Geometry-Based Problems
   • Arithmetic-Based Problems
   • Logical Reasoning-Based Problems

Data Interpretation and Logical Reasoning flashcards for CAT

25 of 51 cards from the Data Interpretation and Logical Reasoning deck — real questions with worked answers.

1. In a data table, what is the standard first step before answering any DI question based on it?

   Read the title, row and column headers, and units carefully to understand exactly what each cell value represents before doing any calculation.

2. How do you calculate percentage change between two values in a table?

   Percentage change = ((New value - Old value) / Old value) x 100. A positive result is an increase; a negative result is a decrease.

3. In tabular DI, what does 'CAGR' stand for and what is its formula?

   Compound Annual Growth Rate. CAGR = ((Final value / Initial value)^(1/n)) - 1, where n is the number of years.

4. What is the key advantage of a table over a chart in data interpretation?

   A table provides exact numerical values, allowing precise calculation, whereas charts give approximate/visual values better suited for trend comparison.

5. In a bar graph, what does the height (or length) of each bar represent?

   The height/length of a bar is proportional to the value (frequency or magnitude) of the category it represents.

6. What is the difference between a simple bar graph and a grouped (clustered) bar graph?

   A simple bar graph shows one value per category; a grouped bar graph places multiple bars side by side per category to compare sub-categories or multiple data series.

7. What does a stacked bar graph show that a grouped bar graph does not emphasize?

   A stacked bar shows the total (sum of all components) per category as the full bar height, with each segment's contribution to that total, emphasizing part-to-whole within each category.

8. When reading a stacked bar, how do you find the value of a middle segment?

   Subtract the cumulative height at the bottom of that segment from the cumulative height at its top (top boundary value minus bottom boundary value).

9. In a line chart, what does the slope of a line segment between two points indicate?

   The slope indicates the rate of change; a steeper upward slope means faster increase, a steeper downward slope means faster decrease, and a flat line means no change.

10. What type of data is a line chart best suited to display?

    Continuous data over time (trends), making it ideal for showing how a quantity rises, falls, or fluctuates across a sequence of intervals.

11. In a multi-line chart, how do you identify the period of maximum gap between two series?

    Locate the point along the x-axis where the vertical distance between the two lines is greatest; that interval has the maximum difference between the two quantities.

12. What does each sector (slice) of a pie chart represent?

    Each sector represents a category's proportion of the whole, with its central angle and area proportional to that category's share of the total.

13. How do you convert a percentage in a pie chart to a central angle in degrees?

    Central angle = (Percentage / 100) x 360 degrees. Equivalently, each 1% equals 3.6 degrees.

14. How do you convert a central angle in a pie chart back to a percentage?

    Percentage = (Central angle / 360) x 100. Each degree equals (100/360)% = 0.2777...%.

15. In a pie chart, if the total is given and a sector is X%, how do you find that sector's actual value?

    Actual value = (X / 100) x Total. Multiply the percentage share by the overall total quantity.

16. What is the main limitation of a single pie chart for comparison across two different totals?

    Pie charts show proportions, not absolute values; a larger percentage in one pie can represent a smaller absolute number if its total is much smaller, so you must use the underlying totals.

17. What is a 'caselet' in DI/LR?

    A caselet is a data set presented entirely in paragraph (textual) form rather than as a table or chart, requiring the solver to extract and often tabulate the data themselves before solving.

18. What is the recommended first step when solving a caselet DI set?

    Read the passage and organize the textual information into a table, grid, or set of equations, identifying knowns and unknowns before attempting the questions.

19. In linear seating arrangement, what does it mean if 'A is to the immediate left of B'?

    It means A is directly next to B on B's left side, with no person in between; the relative order depends on the stated facing direction of the row.

20. In a circular seating arrangement, how do directions of 'left' and 'right' work when people face the centre?

    When all face the centre, a person's left hand points clockwise and right hand points anticlockwise (the reverse of when they face outward).

21. What is the difference between people facing the centre versus facing outward in circular arrangements?

    Facing centre: left = clockwise, right = anticlockwise. Facing outward: left = anticlockwise, right = clockwise. The left/right interpretation flips between the two cases.

22. In seating arrangement puzzles, what are 'definite' versus 'possible' clues, and which should you use first?

    Definite clues fix an exact position or relationship; possible clues allow multiple placements. Always apply definite clues first to anchor the arrangement, then use possible clues to eliminate cases.

23. In blood relations, who is your 'father's brother's son'?

    Your father's brother is your uncle (paternal), so his son is your cousin (cousin brother).

24. In blood relations, what relation is your 'mother's brother' to you?

    Your mother's brother is your maternal uncle.

25. What technique uses + and - or symbols to solve coded blood relation problems?

    The symbol/notation method: assign symbols for gender (e.g., + male, - female) and draw a family tree/generation diagram from the coded relationships to deduce the final relation.

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