Niva Bupa Health Insurance Company Data Scientist Interview Questions and Answers

Precision = TP / (TP + FP), Recall = TP / (TP + FN)

• Precision is the ratio of correctly predicted positive observations to the total predicted positive observations

• Recall is the ratio of correctly predicted positive observations to the all observations in actual class

• Example: If a model predicts 100 positive cases, out of which 80 are actually positive, precision = 80/100, recall = 80/total actual positive cases

R2 measures the proportion of variance explained by the model, while adjusted R2 adjusts for the number of predictors in the model.

• R2 is the proportion of variance in the dependent variable that is predictable from the independent variables.

• Adjusted R2 penalizes the addition of unnecessary predictors in the model, providing a more accurate measure of the model's goodness of fit.

• R2 can increase even when adding irreleva...read more

Insurance is a financial product that provides protection against specific risks in exchange for payment of a premium.

• Insurance is a contract between an individual or entity and an insurance company.

• The individual or entity pays a premium to the insurance company in exchange for coverage against specific risks.

• Types of insurance include health insurance, life insurance, auto insurance, and property insurance.

• Insurance ...read more

Insurance is a financial protection against potential losses or risks.

• Insurance is a contract between an individual or entity and an insurance company.

• The individual or entity pays a premium in exchange for coverage against specific risks.

• In case of a covered loss, the insurance company compensates the policyholder.

• Types of insurance include health, life, auto, home, and business insurance.

• Insurance helps individuals a...read more

The brake system is responsible for slowing down or stopping a vehicle by applying friction to the wheels.

• The brake system consists of components such as brake pads, rotors, calipers, and brake fluid.

• When the brake pedal is pressed, brake fluid is sent through the brake lines to the calipers, which then squeeze the brake pads against the rotors to create friction and slow down the vehicle.

• Regular maintenance of the bra...read more