01
What is a stakeholder analysis?
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Identifying everyone affected by the project and mapping their influence and interest to decide how to communicate with and involve each group.
Business Analytics Interview Questions for Telecom Companies
40 questions weighted to the interview style of telecom companies — 12 easy, 26 medium, 2 hard.
How telecom companies interview for Business Analytics
Telecom and network companies handle huge volumes of customer and network data. Interviews focus on fundamentals, practical skills, and scenario questions about reliability, large datasets and customer-facing systems.
This set focuses on Stakeholder Communication (6), Requirements and Agile (5), Case Studies and Guesstimates (5), Excel for Business Analysts (4).
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02
How would you forecast next quarter's sales in Excel?
Show answer
Use FORECAST.ETS or a trendline on monthly history, check seasonality, compare with a simple moving average and present a range, not a single number.
03
Revenue is 50 crore, cost of goods sold 30 crore, operating expenses 12 crore and depreciation 2 crore. Calculate EBITDA and EBITDA margin.
Show answer
Operating expenses here exclude depreciation. Gross profit is 50 - 30 = 20 crore. EBITDA is gross profit minus operating expenses: 20 - 12 = 8 crore. EBITDA margin is 8 / 50 = 16 percent. EBIT is EBITDA minus depreciation, 8 - 2 = 6 crore, which is a 12 percent operating margin. In an interview, state your assumption about whether operating expenses include depreciation, because that changes the answer.
04
A stakeholder keeps skipping review meetings and then rejects the deliverable at the end. How do you prevent this?
Show answer
Talk to them one-to-one to understand why they skip, such as timing, relevance or workload. Offer shorter reviews, asynchronous reviews with a clear deadline, or a delegate with decision rights. Record sign-offs at each stage in writing so late changes become formal change requests. Share early drafts and mock-ups, because people react better to something visible. Escalate to the sponsor if the pattern risks the timeline.
05
What is the role of a BA in Scrum?
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They help the Product Owner refine the backlog, write stories and acceptance criteria, clarify details with developers and support testing and demos.
06
What are functional and non-functional requirements?
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Functional requirements describe what the system does (login, reports); non-functional ones describe how well it does it (speed, security, availability, usability).
07
In the middle of a sprint, a senior stakeholder asks to add an urgent feature. What do you do?
Show answer
Understand the urgency and the business impact of waiting until the next sprint. Bring it to the product owner, who decides. If it truly cannot wait, the team agrees to swap out work of similar size so the sprint goal stays realistic, and the trade-off is made visible to the stakeholder. If it can wait, add it to the top of the backlog for the next sprint. Avoid silently adding scope.
08
Guesstimate: how many smartphones are sold in India each year?
Show answer
Use a replacement plus new-buyer approach. India has about 144 crore people; assume around 60 crore active smartphone users. If people replace phones every 4 years on average, replacements are about 15 crore a year. Add first-time buyers, say 2 to 3 percent of the remaining adult population, roughly 1.5 crore. The estimate is about 16 to 17 crore phones a year, which is close to reported industry numbers of around 15 crore.
09
What is value chain analysis?
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Value chain analysis breaks a business into the activities that create value: primary activities such as inbound logistics, operations, outbound logistics, marketing and sales, and service, plus support activities like procurement, technology, HR and infrastructure. For each activity you look at cost and differentiation. In cases it helps locate where costs are rising or where a competitive advantage can be built, for example in last-mile delivery.
10
Your project is going to miss its deadline by two weeks. How do you communicate this?
Show answer
Tell the sponsor and key stakeholders as soon as you are confident, not on the deadline. Be direct about the delay, the cause and the impact. Come with options, such as reducing scope to hit the date, adding resources, or moving the date with a phased release, plus your recommendation. Agree on the new plan, update the communication plan and track the recovery visibly.
11
You need to explain the results of a sales forecast model to a non-technical sales team. How do you do it?
Show answer
Skip the formulas and talk about what drives the forecast, such as seasonality, past trend and pipeline, in plain words. Show one chart of actuals versus forecast with a range rather than a single number, and explain that the range reflects uncertainty. Translate it into their terms: what it means for their targets and stock. Invite questions and share an example of where it would be wrong.
12
How do you calculate the percentage contribution of each category?
Show answer
SUM(sales) per category divided by SUM(SUM(sales)) OVER () and multiplied by 100 gives each category's share of the total.
13
What are dynamic array functions in Excel and how do they help analysts?
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Dynamic array functions return several values that spill into neighbouring cells. UNIQUE lists distinct values, SORT and SORTBY order data, FILTER returns rows meeting conditions, SEQUENCE builds number series, and XLOOKUP can return whole rows. For example =SORT(UNIQUE(FILTER(Sales[Region], Sales[Year]=2026))) builds a live region list. They replace many helper columns and Ctrl+Shift+Enter array formulas, and the # operator references a full spill range.
14
What are the current ratio and the quick ratio?
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Both measure short-term liquidity. The current ratio is current assets divided by current liabilities; around 1.5 to 2 is often comfortable, though it varies by industry. The quick ratio excludes inventory and prepaid items: (cash plus marketable securities plus receivables) divided by current liabilities. It is stricter because inventory may not sell quickly. A retailer with a current ratio of 1.8 but a quick ratio of 0.4 depends heavily on selling its stock to pay bills.
15
What is the difference between top-down and bottom-up market sizing?
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Top-down starts from a large known number, such as population or total industry size, and narrows it with percentages to the target segment. Bottom-up starts from a unit, such as one store's daily sales or one customer's purchase frequency, and multiplies up by the number of units. Top-down is fast; bottom-up is more grounded in operations. Doing both and comparing results is a strong sanity check.
16
What are LOD expressions in Tableau and how do FIXED, INCLUDE and EXCLUDE differ?
Show answer
Level of Detail expressions compute an aggregate at a granularity different from the view. FIXED computes at the stated dimensions regardless of the view, for example { FIXED [Customer ID] : MIN([Order Date]) } for first purchase date. INCLUDE adds a dimension to the view level, useful for average sales per customer by region. EXCLUDE removes a dimension, useful for comparing each month with the yearly total. FIXED ignores normal dimension filters unless they are context filters.
17
What is the answer-first or pyramid principle approach to presenting analysis?
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Start with the main conclusion or recommendation, then give the two or three supporting reasons, and only then the detailed data. Senior stakeholders have little time, so a summary like 'Churn rose because of payment failures; fixing retries can save 4 lakh a month' should come first. Detail goes in the appendix. It is the opposite of a chronological walk through every step of the analysis.
18
Prepare a simple cost-benefit analysis for automating invoice processing.
Show answer
Costs: software 12 lakh in year 1 plus 3 lakh per year support, and 4 lakh for implementation and training. Benefits: 60,000 invoices a year at 10 minutes saved each is 10,000 hours; at 400 rupees per hour that is 40 lakh, plus around 5 lakh from fewer late-payment penalties. Year-1 net benefit is 45 - 16 = 29 lakh and payback is under six months. Then test sensitivity, for example if only half the time saving is realised.
19
What is a process flow and which tools do you use?
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A diagram of steps, decisions and owners in a process, made using BPMN or flowcharts in tools like Visio, Lucidchart or draw.io.
20
What is the difference between sequence flow and message flow in BPMN?
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A sequence flow is a solid arrow that shows the order of activities inside one pool, so it represents work controlled by one participant. A message flow is a dashed arrow with an open circle at its start and shows communication between two different pools, such as an order email from a customer to a seller. A common modelling mistake is drawing sequence flows across pools, which wrongly implies one party controls the other's work.
21
What is a RAID log and how does a BA use it?
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A RAID log tracks Risks, Assumptions, Issues and Dependencies for a project. Each entry has an ID, description, owner, impact, status, mitigation or action, and due date. A risk is something that may happen, an issue is something that has already happened, an assumption is believed true but unverified, and a dependency is something the project needs from others. A BA uses it to record requirement assumptions and dependencies, and reviews it weekly so nothing is silently forgotten.
22
How do sample size and minimum detectable effect affect an A/B test design?
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The minimum detectable effect is the smallest lift worth detecting, such as a 2 percent relative increase in conversion. Smaller effects, lower baseline rates and higher required power need much larger samples, roughly four times the users to detect half the effect. Calculate sample size before starting using the baseline rate, MDE, significance level and power, usually 80 percent, then fix the test duration and avoid stopping early.
23
Write a SQL query to calculate the repeat purchase rate.
Show answer
WITH per_customer AS (
SELECT customer_id, COUNT(DISTINCT order_id) AS orders
FROM orders
GROUP BY customer_id
)
SELECT
ROUND(100.0 * SUM(CASE WHEN orders >= 2 THEN 1 ELSE 0 END)
/ COUNT(*), 2) AS repeat_rate_pct
FROM per_customer;
24
What is the Ansoff matrix and how is it used in growth cases?
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The Ansoff matrix maps four growth strategies by product and market. Market penetration sells existing products to existing markets, the lowest risk. Product development offers new products to existing customers. Market development takes existing products to new markets, such as new cities. Diversification launches new products in new markets, the highest risk. In a growth case it structures the options before you evaluate each one's size, cost and fit.
25
What is an index in a database and when can it hurt performance?
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An index is a sorted lookup structure on one or more columns that lets the database find rows without scanning the whole table, much like a book index. It speeds up WHERE filters, joins and ORDER BY on those columns. It hurts when there are too many indexes, because every insert and update must maintain them, and it may not help on low-selectivity columns or when functions are applied to the indexed column.
26
How do you calculate cycle time, touch time and process efficiency? Give an example.
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Cycle time (lead time) is the total elapsed time from the start to the end of a case. Touch time is the time someone actually works on it. Process cycle efficiency is touch time divided by cycle time. Example: a refund takes 5 working days (40 working hours) end to end, but the agents spend only 2 hours in total working on it. Efficiency is 2 / 40 = 5 percent, so 95 percent of the time is waiting, and queues are the main target.
27
What are DAU, WAU and MAU, and what is the stickiness ratio?
Show answer
DAU, WAU and MAU count unique users active in a day, week and month, where 'active' must be clearly defined, such as completing a core action. The stickiness ratio is DAU divided by MAU and shows how often monthly users return. A ratio of 0.5 means the average monthly user is active about 15 days a month. Daily-use products like messaging aim high, while a travel app naturally has low stickiness.
28
What are the steps to publish and share a Power BI report with your team?
Show answer
Save the .pbix and click Publish, choosing the team workspace. In the Service, set data source credentials and, for on-premises data, configure the gateway. Schedule refresh. Then share by giving workspace access to editors, or package it as an app for viewers, and apply row-level security roles if needed. Finally, check it on web and mobile and send the link with a short note on what each page answers.
29
What are leading and lagging indicators? Give examples.
Show answer
Lagging indicators measure outcomes after they happen, such as monthly revenue, profit or churn. They confirm results but are hard to influence directly. Leading indicators move earlier and predict outcomes, such as demo bookings, trial activations, cart additions or support ticket backlog. A good KPI set pairs them: a sales team tracks qualified pipeline (leading) along with closed revenue (lagging) so it can act before the quarter ends.
30
Inventory days rose from 45 to 70 over two quarters. What could be the causes and what would you recommend?
Show answer
Possible causes include falling sales against unchanged purchasing, poor demand forecasts, bulk buying for discounts, slow-moving or obsolete SKUs, or deliberate stock-building ahead of a festive season or expected price rise. Analyse by SKU, warehouse and age bucket to find where stock is stuck. Recommend clearing aged items, adjusting reorder points using recent demand, and reviewing supplier minimum order quantities. Also quantify the cash locked up and the carrying cost to show urgency.
31
What is a SIPOC diagram and when do you use it before detailed process mapping?
Show answer
SIPOC stands for Suppliers, Inputs, Process, Outputs and Customers. It is a one-page, high-level table that lists 4 to 7 main process steps along with who supplies what and who receives the outputs. A BA uses it at the start of a process improvement project to agree on scope and boundaries with stakeholders before spending time on a detailed BPMN map. It prevents arguments later about where the process starts and ends.
32
What is conditional formatting and how would you use it in a business report?
Show answer
Conditional formatting changes a cell's look based on rules or formulas. In reports you can highlight targets missed in red, use data bars for sales size, colour scales for a region heatmap, icon sets for trend direction, or a formula rule like =$E2<$F2 to colour an entire row. Use it sparingly and with a legend so the eye goes only to the exceptions that need action.
33
What is Customer Acquisition Cost (CAC) and what is CAC payback period?
Show answer
CAC is total sales and marketing spend in a period divided by new customers acquired in that period. If you spend 10 lakh and gain 2,000 customers, CAC is 500 rupees. CAC payback period is how many months of gross profit from a customer it takes to recover that CAC. A shorter payback means the business can reinvest faster; many subscription businesses aim for under 12 months.
34
What does the CALCULATE function do in DAX?
Show answer
CALCULATE evaluates an expression under a modified filter context. You pass a measure plus filter arguments that add, replace or remove filters, for example CALCULATE([Sales], 'Region'[Name] = "North") or CALCULATE([Sales], ALL('Product')). It is the basis of time intelligence, percent-of-total and comparison measures. It also triggers context transition when used inside a row context, which is powerful but a common source of confusion.
35
What is a primary key?
Show answer
A column or set of columns that uniquely identifies each row in a table and cannot contain NULL.
36
A client's profits are falling. How do you structure the problem?
Show answer
Split into revenue and cost, then revenue into price, volume and mix, and cost into fixed and variable; check internal factors and external market factors.
37
What is Average Order Value and how can a business increase it?
Show answer
Average Order Value is total revenue divided by number of orders. If an online store earns 9 lakh from 1,500 orders, AOV is 600 rupees. Businesses increase it with bundles, cross-sell and upsell recommendations, free delivery above a threshold, volume discounts and premium options. Watch margin and conversion while doing so, because a high free-delivery threshold can raise AOV but reduce the number of orders.
38
What is a use case diagram?
Show answer
A UML diagram showing actors and the actions (use cases) they perform with the system, giving a quick view of scope.
39
What is an event tracking plan and why does it matter?
Show answer
A tracking plan is a document listing every event the product should log, such as 'checkout_started', with its trigger, properties like price, plan or source, naming rules and owner. It keeps data consistent across web, Android and iOS, prevents duplicate or vague events and makes analysis trustworthy. Without one, teams end up with events like 'click1' and 'buttonClick' meaning the same thing, and analysis becomes guesswork.
40
Tell me about yourself, for a business analyst role.
Show answer
Keep it to about 90 seconds in a present, past, future flow. For example: I am a commerce graduate working as an analyst intern, where I build Excel and Power BI reports and write SQL queries for the sales team. Earlier, my college project analysed customer churn for a local gym and recommended changes they adopted. I want to grow as a business analyst because I enjoy turning business problems into clear requirements and data-driven decisions.
Telecom companies (5)
Telecom
Airtel
Business Analytics interview questions
Gurugram, Bengaluru, Mumbai +1
View questionsTelecom
Jio Platforms
Business Analytics interview questions
Navi Mumbai, Bengaluru, Hyderabad
View questionsTelecom
Ericsson
Business Analytics interview questions
Gurugram, Bengaluru, Chennai +2
View questionsTelecom
Nokia
Business Analytics interview questions
Bengaluru, Chennai, Noida +1
View questionsTelecom
Vodafone Idea
Business Analytics interview questions
Mumbai, Pune
View questionsFrequently asked questions
How are Business Analytics interviews at telecom companies different?
Telecom and network companies handle huge volumes of customer and network data. Interviews focus on fundamentals, practical skills, and scenario questions about reliability, large datasets and customer-facing systems.
Which telecom companies are covered?
This page links to 5 telecom companies, including Airtel, Jio Platforms, Ericsson, Nokia, Vodafone Idea. Each has its own page with rounds and a separate practice set.
What rounds should I expect?
Common rounds at these companies include: HR round; Online assessment (aptitude + technical); Managerial round; Technical interview; Technical interview 1. The exact process varies by company and role.
Other company types
More ways to practise
Company-wise Business Analytics questionsPackage-wise Business Analytics questionsExperience-wise Business Analytics questionsRole-wise Business Analytics questionsCity-wise Business Analytics questionsMost asked Business Analytics questionsScenario-based questionsPractical / hands-on questionsHR & behavioural questionsBusiness Analytics mock interviewOnline assessment questionsTechnical round questionsManagerial round questionsBusiness Analytics topic sheets