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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