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
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define variance in your own words.
💡 Hint: Think about the average and how each number relates to it.
Question 2
Easy
What does a low variance indicate about a dataset?
💡 Hint: Consider how tightly packed the values are.
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 higher variance indicate about a dataset?
- More consistent values
- More spread out values
- Equal values
💡 Hint: Consider what happens to the spread of values if they are all similar.
Question 2
True or False: High variance is always desirable in engineering.
- True
- False
💡 Hint: Think about reliability in engineering processes.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A factory produces metal rods that are supposed to be 5 cm in length. During testing, a sample produced lengths of {4.8, 5.1, 5.0, 4.9, 5.2} cm. Calculate the variance.
💡 Hint: Calculate the mean, then find the squared differences from the mean.
Question 2
Analyze a given set of data points {1, 2, 3, 4, 5} and discuss how variance can impact product decisions in an engineering design.
💡 Hint: Consider how this spread affects reliability and consistency.
Challenge and get performance evaluation