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 mock test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for calculating the mean?
💡 Hint: Think about the average of a set of numbers.
Question 2
Easy
What does a standard deviation of zero imply?
💡 Hint: Consider what it means for data points to be the same.
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 variance measure?
- A. Average data value
- B. Dispersion of data
- C. Total data sum
💡 Hint: Think about why we care about how spread out a dataset is.
Question 2
Is standard deviation always a positive number?
- True
- False
💡 Hint: Consider how the standard deviation is calculated.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given the test scores of five students: 65, 70, 75, 80, and 85, calculate the variance and standard deviation.
💡 Hint: Use the formula for variance with these scores after finding the mean.
Question 2
A dataset has the following ages: 10, 20, 30, 40, 50. Calculate the population variance and standard deviation.
💡 Hint: Remember to use N for population calculations.
Challenge and get performance evaluation