Month: August 2023

Data Science – Hypothesis testing – Interview questions and answers

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1. Hypothesis Testing Q1: A company claims that their new energy drink boosts the average energy levels of individuals by 20%. You collect data from 100 individuals who consumed the energy drink and find an average boost of 18% with a standard deviation of 5%. Using the 0.05 significance level, test the company’s claim. A1: … Read more

Data Science – Descriptive & Inferential Statistics: Interview Questions & Answers

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Q1. What is the difference between descriptive and inferential statistics? Give an example. Answer: Descriptive statistics is concerned with summarizing and organizing data to describe its main features. For example, if you have the test scores of 100 students, the average score would be a descriptive statistic. Inferential statistics, on the other hand, makes predictions … Read more