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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Using the direct method, calculate the mean based on the following data: marks obtained (10, 15, 20) with frequencies (2, 3, 5).
💡 Hint: Multiply marks by frequencies first.
Question 2
Easy
Identify the cumulative frequency for the first two class intervals given frequencies (4, 6).
💡 Hint: Add the frequencies cumulatively.
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 calculating mean using the Direct Method?
💡 Hint: Remember to sum products of classes.
Question 2
True or False: The Assumed Mean Method requires knowing exact data values.
💡 Hint: Think about how we make estimates.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A company collected data from 200 employees regarding their monthly salary ranges. Formulate a grouped frequency table, calculate the mean salary using all three methods, and compare their differences.
💡 Hint: Begin by organizing the data into intervals.
Question 2
In an educational study, analyze exam scores of a whole class of students. Calculate the mean using Direct and Assumed Mean Method, then discuss which best represents the data variation.
💡 Hint: Review which scores were most common in your calculations.
Challenge and get performance evaluation