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TCS NQT GuideTCS NQT Numerical AbilityData Interpretation: Pie Charts and Bar Graphs

Data Interpretation: Pie Charts and Bar Graphs

Learn core concepts, essential formulas, and attempt practice questions designed on the latest TCS NQT testing patterns.

Key Concepts & Formulas

  • 1Pie Charts: Total angle is 360 degrees, which corresponds to 100%.
  • 2Angle to % conversion: 1% = 3.6 degrees.
  • 3Bar Graphs: Compare lengths of blocks to evaluate values.

TCS NQT Style Practice Questions

Practice Question 1

In a pie chart, Food expenses represent 90 degrees. Find the percentage spent on food.

A) 25%
B) 30%
C) 20%
D) 35%

Correct Answer: A) 25%

Step-by-step Solution: Percentage = (Angle / 360) * 100 = (90 / 360) * 100 = 1/4 * 100 = 25%.

Practice Question 2

A bar graph shows sales of 120 in 2021 and 180 in 2022. What is the ratio of sales?

A) 2:3
B) 3:2
C) 1:2
D) 4:3

Correct Answer: A) 2:3

Step-by-step Solution: Ratio = 120 / 180 = 2 / 3 = 2:3.

Study Pro-Tip

Keep the base value (denominator) correct when working on ratio comparison queries.

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