Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
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 related to the topic.
Question 1
Easy
What is the formula for the mean of a dataset?
💡 Hint: Think of how to average a set of numbers.
Question 2
Easy
What does a higher variance indicate about a dataset?
💡 Hint: Consider how close or far the data points are from the average.
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 is variance?
- A measure of central tendency
- A measure of data dispersion
- A fixed value
💡 Hint: Consider how data points are arranged around their average.
Question 2
True or False: The standard deviation is the square root of variance.
- True
- False
💡 Hint: Think about how both terms are related mathematically.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A dataset has the values [10, 20, 30, 40, 50]. Calculate the mean, variance, and standard deviation, and interpret the results.
💡 Hint: Use the respective formulas to break down the calculations step by step.
Question 2
You have two datasets with the following characteristics: A has a mean of 50 and a standard deviation of 5, while B has a mean of 50 with a standard deviation of 10. Compare their variances and explain what this means.
💡 Hint: Recall that variance is the square of the standard deviation.
Challenge and get performance evaluation