Exercises

Statistics for Data Science Quiz

Put your statistics for data science skills to the test. This quiz covers essential concepts used to summarize, interpret, and make inferences from data, including mean and median, measures of dispersion, outliers, normal distributions, standard deviation, probability, skewness, confidence intervals, p-values, and Type I errors. Work through practical questions involving datasets and hypothesis testing to check your understanding of core statistical foundations for data science. Ideal for students, aspiring analysts, and anyone refreshing their quantitative reasoning skills.

Answer the questions below and check the explanation for each answer.

0/10 answered

  1. 1

    What is the mean of the data set: 5, 10, 15, 20, 25?

  2. 2

    Which measure of central tendency is most affected by outliers?

  3. 3

    In a normal distribution, what percentage of data falls within one standard deviation from the mean?

  4. 4

    Which is not a measure of dispersion?

  5. 5

    What is the probability of rolling a 3 on a fair six-sided die?

  6. 6

    What does a p-value indicate in hypothesis testing?

  7. 7

    What is the median of this dataset: 2, 3, 5, 8, 10?

  8. 8

    What does a confidence interval provide?

  9. 9

    How is skewness of the data defined?

  10. 10

    What is a Type I error in hypothesis testing?

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