UPSSSC PET 2026 DI Sample Paper 02 🔥 | Pet Di Class | Data Interpretation | Aditya Ranjan Sir

Summary

Aditya Ranjan Sir conducts a data interpretation (DI) practice class, working through examples based on tables, a line graph, and a bar graph. The central lesson is to read each question carefully, identify only the figures it requires, and use totals, ratios, averages, and approximations efficiently rather than doing unnecessary calculations.

Main Methods and Lessons

• Scan the questions before calculating. In a table set, first check which row or column totals the questions will require. If several questions use the same totals, calculate them once and reuse them.
• Use totals to compare averages when groups are equal in size. If each broker has figures for the same number of months, the broker with the larger total also has the larger average. Likewise, when comparing monthly averages based on the same number of brokers, compare the monthly totals instead of calculating each average.

• Calculate percentage change using the original or reference value as the denominator. Percentage increase or decrease = difference ÷ original value × 100. For example, when comparing August’s total with June’s, divide the difference by June’s total—not August’s.

• Simplify ratios before doing further arithmetic. For instance, the instructor compares broker totals of 208 and 200 by reducing them to 1.04:1. In the annual-expense example, total tax and transport expenses simplify to a ratio of 15:11.

• Use approximation when the answer choices allow it. The instructor rounds figures to convenient values, estimates percentages such as two-thirds as roughly 66–67%, and uses simple fractions to identify the closest option. He cautions students not to approximate when the options are too close together.
• For multi-year percentage comparisons, compare percentages—not raw differences. A larger absolute change does not necessarily mean a larger percentage change; measure each change against the preceding year’s value.
• For cumulative student counts, update the total by net change. Add the students joining and subtract those leaving each year. In the example, the school starts with 3,000 students in 2010, and the net changes produce these totals:
  • 2011: 3,100
  • 2012: 2,950
  • 2013: 3,000
  • 2014: 3,150
  • 2015: 3,100
  • 2016: 3,200
• For an average, use either a total or deviations from a convenient assumed average. In the rent example, the instructor adds the figures to get an average of 72, then demonstrates checking the deviations above and below 72.
• For a projected total, add only the increases to the known total. In the 2024 expense question, the 2023 total is 770 lakhs. Rather than recalculating every category, the instructor adds the extra amounts from the salary and tax increases, arriving at 850 lakhs.
• Read the wording closely. “Total expenditure” includes all listed categories, including salary. To find which year had the highest transport expense as a share of total expenditure, compare transport ÷ that year’s total—not transport amounts alone.
• Manage time strategically. If a question looks unusually long or confusing, move on and return to it later. All questions carry equal marks, so spending too long on one can cost time elsewhere.

Practice Examples Covered

• Broker-account table: Find the month with the largest average number of accounts, compare August and June totals as a percentage, compare broker totals by ratio, and identify the broker with the highest average. The worked totals include 208 for Angel, 147 for Sher Khan, 200 for Jharoda, and 232 for Tradebull.
• Company-expense table: Calculate an average rent, find salary and marketing expenses as a share of a year’s total, compare transport expense as a percentage of annual expenditure, project a revised total for 2024, and compare cumulative tax and transport expenses.
• School-enrollment line graph: Combine yearly entrants and dropouts to calculate student strength; compare dropout counts by percentage change; and answer questions about student-strength percentages and the ratio of minimum enrollment to maximum dropout figures.
• Wheat-production bar graph: Calculate percentage growth between years, identify the largest year-on-year percentage increase, compare production totals across selected years, count years above the overall average, and estimate a subsequent year’s production from a stated percentage increase.

The instructor also briefly recommends practicing calculation speed and mentions a calculation-practice book and other DI lessons. He closes by noting that the sample-paper sets use varied formats and difficulty levels.

Speakers and Sources Featured

• Aditya Ranjan Sir — instructor and primary speaker.
• Unnamed students/viewers — represented through comments or chat responses to questions.
• Practice data presented by the instructor — broker account figures, company expenditure figures, school enrollment and dropout figures, and wheat-production figures.