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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Explain the concept of grouped data in your own words.
💡 Hint: Think about why we group data.
Question 2
Easy
What is the formula for calculating mean in the direct method?
💡 Hint: Remember the roles of f and N.
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 formula for the direct method of calculating mean in grouped data?
- X = ∑fx / N
- X = A + (∑fd / N)
- X = (f * x) / N
- X = Σ(fx) + f
💡 Hint: Remember we want to calculate the average.
Question 2
True or False: The mean computed using direct and indirect methods always results in different values.
- True
- False
💡 Hint: Think about the nature of averages.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have the following frequency distribution: [A: 5, B: 10, C: 20]. Calculate the mean using both methods and analyze the differences.
💡 Hint: Check calculations step by step!
Question 2
Given grouped data intervals of [1-5, 6-10, 11-15] with respective frequencies of [4, 8, 10], compute the mean using indirect method and discuss the implications.
💡 Hint: Deviations from assumed mean are key here!
Challenge and get performance evaluation