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 arithmetic mean of the following numbers: 10, 20, 30?
💡 Hint: Add the numbers together and divide by how many numbers there are.
Question 2
Easy
Calculate the mean of 5, 15, and 25.
💡 Hint: Count the total and divide by the count.
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 the arithmetic mean formula?
💡 Hint: Remember, it’s about summing and dividing.
Question 2
True or False: The arithmetic mean can be affected by extreme values.
- True
- False
💡 Hint: Think about how a very high or low score impacts the average.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
In a survey, five different people reported the amount of time they spend reading per week: 10, 25, 20, 15, and 30 hours. How much should another participant contribute to ensure that the new average reading time becomes 20 hours?
💡 Hint: Calculate the total hours needed and subtract the current total.
Question 2
A teacher calculated that the average test score of 12 students was 75. If one student’s score was omitted, resulting in an average of 72, find the omitted score.
💡 Hint: Use the average formulas to express the omitted score.
Challenge and get performance evaluation