Practice - Measures of Spread: How Data Varies
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
Define range in your own words.
💡 Hint: Consider what the highest and lowest values tell us.
Calculate the range of the dataset: {10, 15, 20, 25}.
💡 Hint: Identify the maximum and minimum values first.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for calculating range?
💡 Hint: Think about what the definitions of maximum and minimum are.
The IQR is what?
💡 Hint: Ask yourself what IQR captures from the dataset.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A researcher collected data on time spent studying by students over one week: {2, 3, 4, 5, 50}. Calculate the range and IQR. What do you notice about the outlier?
💡 Hint: Identify the extreme value that changes the overall insights into studying habits.
You have the following data set of prices in dollars: {5, 20, 30, 60, 100}. Find the range, IQR, and discuss the significance of the outlier price.
💡 Hint: Recognize how an outlier inflates the perception of the entire dataset.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.