Practice Weighted Arithmetic Mean (5.2.1.3.1) - Measures of Central Tendency

Practice: Weighted Arithmetic Mean

Lesson 5.2.1.3.1Measures of Central Tendency

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6 sample questions

Question 1.
Define the weighted arithmetic mean.
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Consider how each item’s significance differs.
Question 2.
What formula is used to calculate the weighted mean?
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Think of how weights and values combine.
3Question 3.
What is the purpose of using a weighted mean?
- To treat all values equally
- To assign different importance
- To average only the highest values
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Think about averages in real-life scenarios.
4Question 4.
True or False: The weighted mean can be misleading if the weights are not rightly assigned.
- True
- False
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Consider how incorrect data assignment could affect outcomes.
Question 5.
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.
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Add up all the costs multiplied by their counts.
Question 6.
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?
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Focus on the scores and the number of ratings to calculate properly.

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