Data Interview Questions
Practice real interview questions for Data & AI roles, and build the skills that get you hired.
Showing 322 of 322 questions
VisaCross-border share by card tierSQLhard
MetaAverage reactions per post typeSQLmedium
SpotifyTop track per listenerSQLmedium
UberCompleted trips by hour of daySQLeasy
InstacartLatest order statusPandasmedium
MicrosoftSalary against department totalSQLeasy
StripeLongest streak of successful paymentsPythoneasy- VisaMonthly approved spendPandasmedium
NetflixWatch time by genrePandaseasy
WalmartTotal completed revenueSQLeasy
ShopifyRevenue by plan and monthPandasmedium
PhonePeFailures in a rowPremiumSQLhard
PinterestTop pin categoriesPythonmedium
GooglePaid above the department averageSQLhard
DatadogQuiet time between incidentsSQLmedium- UberAverage rating by vehicle typePandasmedium
AmazonProducts with no brandSQLeasy
AtlassianSlowest ticket per projectSQLmedium
LyftLowest and highest farePythoneasy
Best BuyPro productsSQLeasy
ZillowTwo homes that match a budgetPythonmedium
Capital OneMissed minimum paymentsPremiumSQLmedium- AmazonLargest order per customerPandashard
ZerodhaPosition after each tradeSQLmedium
AirbnbLongest trip without repeat citiesPremiumPythonhard
EtsyTrusted shop reviewsPandaseasy- MetaHighest paid in each departmentSQLhard
- WalmartMissing order numberPythoneasy
- AmazonTop spending customersSQLmedium
- StripeOutliers by z-scoreStatisticsmedium
TargetProducts launched in 2024SQLeasy
SwiggyDelivery time by cityPandaseasy
FanDuelPlace within the contestPandasmedium- TargetMerge sales by regionPythoneasy
CoinbaseDrawdown from the peakSQLhard
DoorDashDelivery time by cuisineSQLmedium
SalesforceWin rate by sales repPremiumSQLmedium- MicrosoftFizzBuzzPythoneasy
RobinhoodOpen positions by userSQLmedium- NetflixMerge viewing sessionsPythonmedium
- AmazonCustomers without ordersSQLmedium
- MetaPosting on consecutive daysPremiumSQLhard
- WalmartRotate a shift schedulePythoneasy
- StripeMonthly completed revenueSQLhard
- Best BuyBig orders or a loyal customerSQLmedium
- TargetShow missing discounts as zeroSQLeasy
LinkedInReverse the wordsPythoneasy
BlinkitLongest stockout runSQLhard
DraftKingsStandard deviation of scoresStatisticsmedium- SalesforceDepartment headcount and paySQLmedium
- AmazonOrders from enterprise customersSQLmedium
- WalmartOrder sequence per customerSQLmedium
- RobinhoodBest single tradePythonmedium
FlipkartReturns by reasonPremiumSQLmedium- AirbnbCancellation rate by room typeSQLmedium
- DatadogSeverity mix per serviceSQLmedium
MastercardMerchants with high fraud ratesSQLmedium- StripeRunning account balancePremiumPandasmedium
- AmazonStage times per packageSQLmedium
NykaaSpend to datePremiumSQLmedium- ZillowListings missing a pricePandaseasy
- LyftBusiest hour per cityPremiumPandashard
- Best BuyFind a price in a sorted listPythoneasy
- CoinbaseThree day averageSQLmedium
MyntraDeepest cut per productSQLmedium- DoorDashTop restaurant in each cityPremiumSQLhard
- MastercardRead a nested settingPythonmedium
- SpotifyListening time so farSQLmedium
- EtsyMost common review wordPythonmedium
- NykaaCost per order gridPremiumPandashard
WorkdaySort employee recordsPythonmedium- AmazonThe busiest customerSQLmedium
- AirbnbLongest palindrome in a namePythonhard
- UberFare per kilometer by citySQLmedium
- ZerodhaPrice moved since last tradePremiumSQLmedium
- AmazonAverages that skip NULLsSQLhard
- NetflixMost-watched title in each countryPremiumSQLhard
- InstacartMinutes from order to doorstepPremiumSQLhard
- WalmartPrice after discountSQLmedium
- TargetBest week of salesPythoneasy
- StripeNet balance by accountSQLmedium
- DoorDashMerge sorted delivery timesPythoneasy
- MetaCorrelation between metricsStatisticshard
- SwiggyRevenue against targetPremiumSQLmedium
- PinterestEach user's top categoryPremiumSQLhard
- StripeRevenue by countrySQLmedium
- TargetUnfinished orders over 50SQLeasy
- AmazonLarge orders with customer namesSQLeasy
- PhonePeMoney moved by payment typeSQLmedium
PandoraListening minutes per listenerPandaseasy- ShopifyRevenue to date per merchantSQLmedium
- NetflixCompletion rate by content typeSQLmedium
- Best BuyCompare with the previous orderSQLhard
- SalesforceTop earner per departmentPandasmedium
- WalmartProducts under 50SQLeasy
PagerDutyHours lost by dayPandashard- FlipkartTop reason per categoryPremiumSQLmedium
- AtlassianResolution time by priorityPremiumPandasmedium
- UberDrivers without ridesPandasmedium
- AirbnbBooked revenue by cityPandasmedium
- ZillowPrice changes month to monthPythoneasy
- DraftKingsEveryone in the top threeSQLmedium
- StripeCompleted versus other ordersSQLmedium
- AmazonRevenue by categoryPandaseasy
- RobinhoodBest and worst day per assetPandashard
- DatadogThe 95th percentileStatisticsmedium
- DoorDashMost visited locationPythonmedium
- PhonePeRetries before it workedPremiumSQLhard
- TargetCustomers who came backPythonmedium
- MetaFirst and last position of a userPythonmedium
- VisaAny duplicate transaction ids?Pythoneasy
- WalmartOrders per calendar monthSQLmedium
- MyntraLongest price holdPremiumSQLhard
WayfairWhich products repeat?Pythonmedium- PinterestPins by categoryPandasmedium
- InstacartFirst item bought twicePythoneasy
- AmazonPrice bandsSQLeasy
- Best BuyElectronics and accessoriesSQLeasy
- FanDuelLineups above their contest averagePandasmedium
- SwiggyTop partners per cityPremiumSQLmedium
- CoinbaseDaily returnSQLmedium
- EtsyShops per tagPandasmedium
- TargetOrders per customerSQLeasy
- ShopifyPlan changesSQLmedium
- ZerodhaBusiest stock per clientSQLmedium
- AmazonFirst unique characterPythoneasy
- Best BuyEven-numbered ordersSQLeasy
- SpotifyBack to back repeatsSQLmedium
- StripeOrder amount with taxSQLeasy
- NykaaSpend by channelPremiumSQLmedium
- Capital OneHigh credit utilizationSQLmedium
- GoogleEmployee senioritySQLmedium
- UberCompleted trips by cityPandaseasy
- WalmartCounting what is recordedSQLmedium
- StripeSplit requests into batchesPythoneasy
- BlinkitHow often it ran outSQLmedium
- UberCompress a status logPythonmedium
- LyftBusiest request hourPythoneasy
- LinkedInHires per yearSQLeasy
- AmazonRevenue by statePandasmedium
- SalesforceAverage sales cycleSQLmedium
- WorkdayEmployees and their managersSQLmedium
- RobinhoodBest stretch of daysPythonmedium
- ZerodhaThe day the position closedPremiumSQLhard
- Best BuyMove zero-sale days to the endPythoneasy
- AmazonPackages still movingSQLmedium
- RobinhoodMonthly traded valuePandasmedium
- WalmartCustomers outside the US and MexicoSQLeasy
- AirbnbMirror promo codesPythoneasy
- InstacartItems and aisles per orderPandaseasy
- DraftKingsPrize ranks with tiesSQLmedium
- PinterestNormalize hashtagsPythoneasy
- AtlassianSubtasks that outlived the parentPremiumSQLmedium
- FlipkartRefunds so farPremiumSQLmedium
- NetflixRemove duplicates, keep the orderPythoneasy
- StripeRunning revenue over timeSQLhard
- PandoraShare of plays cut shortPandasmedium
- TargetCustomers with repeat ordersSQLmedium
PelotonLongest run of consecutive daysPythonmedium- SwiggyDay over day swingPremiumSQLmedium
- NetflixTwo episodes before landingPythonhard
- ShopifyUnbroken runs of monthsSQLhard
- AmazonStock statusSQLeasy
- DatadogIncidents that overlappedSQLhard
- EtsyAnagram checkPythoneasy
- CoinbaseLongest rising streakSQLhard
- UberLow-rated driversSQLmedium
- ZillowPrice per square foot by citySQLmedium
- AmazonHours between scansSQLmedium
- TargetClearance candidatesSQLeasy
- ZillowWhere a new price fitsPythonmedium
- WalmartOrders above the averageSQLeasy
- SalesforceBalanced bracketsPythonmedium
- DoorDashStretches that hit a targetPremiumPythonhard
- BlinkitEvery stockout windowPremiumSQLhard
- PagerDutyLongest incident per servicePandasmedium
- AmazonOrders per customer segmentSQLmedium
- SpotifyListening sessionsPremiumSQLhard
- AirbnbNights booked per citySQLmedium
- DraftKingsPoints above the contest averageSQLmedium
- ZerodhaNet position gridPremiumPandashard
- Best BuyOrders placed in March 2024SQLeasy
- StripeThree transactions that cancel outPythonhard
- AirbnbMedian order valueStatisticseasy
- GoogleFactorialPythoneasy
- SwiggyCancellation split by restaurantSQLmedium
- StripeOrders in a price rangeSQLeasy
- MetaReactions by post typePandasmedium
- WalmartInventory valueSQLeasy
- AtlassianPriority mix per projectSQLmedium
- MyntraPrice dropsPremiumSQLmedium
- AmazonFlatten a category treePythonmedium
- TargetActive productsSQLeasy
- InstacartKth largest orderPythonmedium
- NetflixSalary rank within departmentSQLmedium
- PhonePeMoney moved so farPremiumSQLmedium
- AmazonPrime vs. standard order valueSQLmedium
- PinterestGroup anagramsPythonmedium
- DatadogMerged outage windowsSQLhard
- Best BuyIn-stock electronicsSQLeasy
- MastercardCard-testing patternsPremiumSQLhard
- UberSearch a rotated schedulePremiumPythonhard
- NykaaCheapest channel per campaignSQLmedium
- WalmartWeekend ordersSQLmedium
- RobinhoodHoldings in long formatPremiumPandashard
- Capital OneInvert team assignmentsPythonmedium
- EtsyVerified rating by shopSQLmedium
- StripeDays from signup to first orderSQLmedium
- TargetOrders by statusSQLeasy
- LyftSurge share by citySQLeasy
- VisaMonth-over-month spend changePremiumSQLhard
- FlipkartDamage share of refundsSQLmedium
- AmazonSlowest package per facilitySQLhard
- DoorDashSlow deliveries by cuisinePandasmedium
- UberA hundred against a hundred and thirtyA/B testingeasy
- MyntraCorrelation and causationCausal inferenceeasy
NotionDid the pricing change move it?Statisticseasy
eBayETL or ELTData warehouseeasy- SpotifyExplaining analysis to a stakeholderBehavioraleasy
- ShopifyHow precise is that conversion rate?Statisticseasy
- WalmartInner, left or full outerSQLeasy
- WayfairMean or median?Statisticseasy
- CoinbaseOwning a project end to endBehavioraleasy
RedditType I and Type II errorsStatisticseasy- FlipkartWhy switch into dataBehavioraleasy
- DatadogWill the whole run finish?Probabilityeasy
- DoorDashA daily orders pipelineData pipelinemedium
IntuitA t-test or a chi-squareStatisticsmedium
CREDActivation fell last weekProduct sensemedium- LinkedInAn ML project end to endMachine learningmedium
- SwiggyBeyond delivery timeProduct sensemedium
NvidiaBias and varianceMachine learningmedium- GoogleBuilding a spam filterPremiumMachine learningmedium
FigmaChanging a decision with dataBehavioralmedium- StripeDashboard disagrees with financeData qualitymedium
- MastercardData leakageMachine learningmedium
- ShopifyDesigning an orders fact tableData modelingmedium
- AmazonDisagreeing with a stakeholderBehavioralmedium
CohereFine-tuning or RAGLLMmedium- InstacartFlat overall, up in one marketA/B testingmedium
- RobinhoodGetting an analysis wrongBehavioralmedium
Hugging FaceHow attention worksLLMmedium- FlipkartHow long the test has to runA/B testingmedium
- AtlassianInfluence without authorityBehavioralmedium
- AirbnbInstant Book as the defaultProduct sensemedium
- GoogleIs the coin fair?Probabilitymedium
DatabricksIs the model overfitting?Machine learningmedium- LyftLeading indicators after launchProduct sensemedium
- PelotonLearning something fastBehavioralmedium
- MetaMarketplace health metricProduct sensemedium
- AirbnbMeasuring a good stayPremiumProduct sensemedium
- AmazonMeasuring Buy AgainProduct sensemedium
- UberMeasuring driver satisfactionProduct sensemedium
- GoogleMeasuring search result qualityPremiumProduct sensemedium
- ZillowMonitoring a live modelMLOpsmedium
PlaidMonitoring data qualityData qualitymedium- SpotifyOffline or online evaluationMachine learningmedium
- AmazonOne metric for app healthProduct sensemedium
- DoorDashPaying out on late ordersProbabilitymedium
DropboxPicking a materializationAnalytics engineeringmedium
DuolingoPicking a North StarProduct sensemedium- SwiggyPizzas delivered on a Friday nightGuesstimatesmedium
PalantirPushing backBehavioralmedium
ZomatoRaising repeat ordersProduct sensemedium- MicrosoftReading a confidence intervalStatisticsmedium
OpenAISame question, different answersLLMmedium- MicrosoftSample ratio mismatchA/B testingmedium
- AirbnbShip on a significant resultPremiumA/B testingmedium
- DraftKingsShipping under a deadlineBehavioralmedium
- PinterestShipping without significancePremiumA/B testingmedium
- SpotifyShuffle does not feel randomProbabilitymedium
- StripeSignup to paid funnelPremiumAnalytics engineeringmedium
SnowflakeSlowly changing dimensionsData modelingmedium- FlipkartSmartphones sold in India in a yearGuesstimatesmedium
ZeptoStanding up a first dashboardAnalytics engineeringmedium- TargetStar or snowflakeData warehousemedium
- NetflixStoring viewing historyPremiumData modelingmedium
- NotionStructuring a dbt projectAnalytics engineeringmedium
- UberSunday orders down in one cityProduct sensemedium
- GoogleTennis balls in a passenger jetGuesstimatesmedium
- AirbnbTesting host onboardingA/B testingmedium
RampTesting in dbtAnalytics engineeringmedium- MetaTesting Save for LaterPremiumA/B testingmedium
- RampThe first data hireAnalytics engineeringmedium
- NetflixThe lift the test can promiseA/B testingmedium
TwilioTwo definitions of one metricBehavioralmedium
AdobeUnclear requirementsBehavioralmedium- SalesforceWarehouse or BI toolAnalytics engineeringmedium
- LinkedInWhat a bigger sample buysStatisticsmedium
- VisaWhat a fraud alert is worthProbabilitymedium
- NetflixWhat a p-value meansStatisticsmedium
- MetaWhat counts as a DAUPremiumProduct sensemedium
Scale AIWhat makes a response goodLLMmedium- SwiggyWhat the review sample picks upProbabilitymedium
PayPalWhen one class is rareMachine learningmedium- EtsyWhen to retrainMLOpsmedium
- AmazonWhy Prime signups fellPremiumProduct sensemedium
- NetflixWhy randomize an experimentA/B testingmedium
- MetaWhy Reels viewing fellPremiumProduct sensemedium
- ShopifyWorking with ambiguous dataBehavioralmedium
- Capital OneXGBoost or a neural networkMachine learningmedium
RazorpayYour first week on the jobBehavioralmedium
AppleYour proudest projectBehavioralmedium- NetflixData a streaming service pushes in a dayGuesstimateshard
AnthropicEvaluating a coding assistantLLMhard- AirbnbFinding fake reviewsPremiumMachine learninghard
- DatabricksFine-tuning on private dataPremiumLLMhard
SierraHallucinations in productionLLMhard- DuolingoHow many users the test needsA/B testinghard
- PhonePeImpact without an experimentPremiumCausal inferencehard
- UberIs Comfort eating UberX?PremiumProduct sensehard
- PinterestLow latency model servingPremiumML system designhard
- NetflixPowering Continue WatchingPremiumData pipelinehard
PerplexityRAG for legal searchLLMhard- GoogleRecommending to a new userML system designhard
- ZeptoRiders a city needs at the dinner peakGuesstimateshard
- GoogleSimpson's paradoxStatisticshard
- UberSpotting fraud in trip dataPremiumMachine learninghard
- DatadogSub-second at scaleData pipelinehard
- NetflixWarehousing A/B test dataPremiumData warehousehard
- RampWhat the traffic can detectA/B testinghard
- StripeWhen short IDs collideProbabilityhard