5.2.1.3.1 - Weighted Arithmetic Mean
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Practice Questions
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Define the weighted arithmetic mean.
💡 Hint: Consider how each item’s significance differs.
What formula is used to calculate the weighted mean?
💡 Hint: Think of how weights and values combine.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the purpose of using a weighted mean?
💡 Hint: Think about averages in real-life scenarios.
True or False: The weighted mean can be misleading if the weights are not rightly assigned.
💡 Hint: Consider how incorrect data assignment could affect outcomes.
1 more question available
Challenge Problems
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A shop sells 70 apples at $1 each, 30 apples at $1.50 each, and 10 apples at $2 each. Calculate the weighted average cost of an apple.
💡 Hint: Add up all the costs multiplied by their counts.
In a survey, two groups had the following reactions: Group A (30 people rated 1-5 scale scores of 3 and 60 people rated scores of 4). What is the weighted mean of their ratings?
💡 Hint: Focus on the scores and the number of ratings to calculate properly.
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