ISS26

You can run a genuinely useful mock interview at home with four things: a deck of real questions, one friend holding your application form, a phone camera, and a five part rubric to score the recording honestly. Run it three times a week until your summon letter arrives, and daily in the final week, and … Read more

Dress formally, simply and comfortably, wear nothing new on the day, sit when invited, look at whoever asked and include the rest as you answer, and speak a little slower than feels natural. That is the whole of it. No script of past recommended candidates records a board commenting on a tie or a saree. … Read more

Answer opinion questions in the UPSC ISS interview with a four part frame: lead with what the data says, present both sides fairly, anchor in an institution or a method rather than a party, and close with a decision held humbly. Your loyalty in that room is to measurement, and a board can hear that … Read more

Say it plainly, once, without a spiral of apology, and wherever you can, attach the part you do know or ask to reason it out. The public record of recommended candidates proves this is not a consolation strategy. A 2020 candidate said sorry to three consecutive questions on branches of official statistics, said it again … Read more

Introduce yourself in the UPSC ISS interview in sixty to ninety seconds, in chronological order, with facts and no adjectives about your own character: where you are from, what you studied, what you do, one genuine interest, and why this service. Before that sentence is ever spoken, the first minute belongs to the walk in, … Read more

Every question below was asked in a real UPSC ISS interview, drawn from the transcripts of recommended candidates across the last year cycles, lightly generalised. Each carries a one line pointer, not a full answer, because the thinking is the preparation. Week 2 covered the machinery: the ISS officer’s work, the surveys, the indices, GDP, … Read more

Three stories dominate India’s data landscape as the 2026 interviews approach: Census 2027 is underway with its houselisting phase running right now and caste enumeration coming, the Digital Personal Data Protection Rules were notified in November 2025, and artificial intelligence has entered both the questions and the machinery of statistics. Real boards have asked about … Read more

ISS boards regularly ask candidates to explain statistical ideas in plain language: a p value to a layman, the difference between correlation and causation, why samples work at all. The transcripts prove the pattern: real candidates were asked for practical life examples of the normal distribution, everyday uses of the harmonic mean, which average best … Read more

India’s GDP is estimated by the National Statistical Office by measuring the value added of every sector of the economy, cross checked from the production, income and expenditure sides. On 27 February 2026, the NSO released an entirely new GDP series with base year 2022-23, replacing the 2011-12 base that had stood for over a … Read more

India measures prices and production through three headline indices: the Consumer Price Index for retail prices, the Wholesale Price Index for bulk trade prices, and the Index of Industrial Production for output. In February 2026 the CPI was rebuilt on a new base year of 2024, which makes this the single most interview relevant topic … Read more