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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