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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for standard deviation?
💡 Hint: Think about how standard deviation relates to variance.
Question 2
Easy
Why is standard deviation preferable over variance?
💡 Hint: Consider the implications of units in interpretation.
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?
- Data points are close to the mean
- Data points are spread out
- Data points are negatively skewed
💡 Hint: Think about the distribution of values.
Question 2
True or False: Standard deviation can be negative.
- True
- False
💡 Hint: Consider what SD represents and the significance of distance.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You collect the heights of five basketball players: 180 cm, 190 cm, 185 cm, 175 cm, and 195 cm. Calculate the variance and standard deviation of their heights.
💡 Hint: First, find the mean, then calculate squared differences and their average.
Question 2
In a statistical experiment, the weights of bats are recorded as: 2.0 kg, 2.5 kg, 2.4 kg, and 3.0 kg. If the standard deviation is computed to be 0.3 kg, discuss how this affects the consistency of bat weights.
💡 Hint: Reflect on what standard deviation tells us about the range of weights.
Challenge and get performance evaluation