Practice Standard Deviation - 3.2 | Introduction to Statistics | Data Science Basic
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3.2 - Standard Deviation

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the formula for calculating standard deviation for a sample?

💡 Hint: Remember, you're dividing by n - 1 for samples.

Question 2

Easy

Define standard deviation in your own words.

💡 Hint: Think about variability and spread.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does a high standard deviation indicate about a dataset?

  • Data is close to the mean
  • Data is spread out
  • Data is always increasing

💡 Hint: Think about how scores might vary.

Question 2

True or False: A standard deviation of zero means all data points are identical.

  • True
  • False

💡 Hint: Reflect on what it means for values to not vary.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Given a dataset of temperatures recorded over a week: {70, 72, 68, 75, 65, 80, 78}, compute the standard deviation. Discuss what this could indicate about temperature consistency.

💡 Hint: Calculate the mean first, then the variance, before taking the square root.

Question 2

You are comparing the performance of two different sales teams. Team A has monthly sales figures of {2000, 2200, 1800, 1900, 2100}, while Team B has figures of {3000, 2900, 3100, 3300, 3200}. Calculate the standard deviation for both teams and discuss which team performed more consistently.

💡 Hint: Remember to consider the implications of higher and lower standard deviations.

Challenge and get performance evaluation