LendingTree Data Scientist Interview Questions

The questions to prepare for a LendingTree Data Scientist interview. Questions from real interview reports rank first. Updated weekly.

Prevent Overfitting in ML Models

Easy

Explain how to reduce overfitting using regularization, validation, and model selection.

Cross-ValidationBias-Variance TradeoffRegularization

LendingTree

More Machine Learning questions with a free account

Measure Marketing Campaign Success

Easy

Define campaign success using business KPIs, funnel conversion, acquisition cost, and leading indicators tied to outcomes.

Funnel AnalysisKPIsLeading Indicators

LendingTree

More Metrics questions with a free account

Create a free account to unlock this list and practice real interview questions.

A/B Testing for Product Features

Medium

Explain how to design and evaluate an A/B test for a product feature, including metrics, MDE, sample size, and guardrails.

Hypothesis TestingStatistical SignificanceA/B Testing

LendingTree

More Statistics & Probability questions with a free account

Recommend Improvements from Customer Data

Medium

Use customer data to identify the highest-impact product improvements and decide what to build first.

Feature PrioritizationUser NeedsValue Proposition

LendingTree

Improve User Retention Approach

Hard

Tests retention problem framing, hypothesis building, and measurement strategy.

Feature PrioritizationUser NeedsRetention

LendingTree

Join and Filter Tables in SQL

Easy

Tests SQL join logic and correct filtering to produce the desired dataset.

JoinsData WranglingCase When

LendingTree

More SQL & Data Manipulation questions with a free account

Open any question for its full solution and discussion.