Using Z-Scores to Compare Data (HSC SSCE Mathematics Standard): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the main purpose of using z-scores when comparing data?
What is the main purpose of using z-scores when comparing data?
To compare datasets with different means
What is the correct formula for calculating a z-score?
What is the correct formula for calculating a z-score?
What does a z-score tell us about a data value?
What does a z-score tell us about a data value?
How many SDs it is from the mean
In which situation does a more negative z-score represent better performance?
In which situation does a more negative z-score represent better performance?
Race times in swimming events
Which z-score represents a value furthest from the mean?
Which z-score represents a value furthest from the mean?
What does a positive z-score indicate?
What does a positive z-score indicate?
The value is above the mean
Calculate the z-score: , mean , SD .
Calculate the z-score: , mean , SD .
Ali scored 65 (mean 52, SD 9.5) in English and 61 (mean 47, SD 7.5) in Maths. Which is better?
Ali scored 65 (mean 52, SD 9.5) in English and 61 (mean 47, SD 7.5) in Maths. Which is better?
Maths with higher z-score
Why is comparing raw scores without z-scores problematic?
Why is comparing raw scores without z-scores problematic?
Like comparing apples to oranges
In swimming, David's butterfly z-score was . What does this mean?
In swimming, David's butterfly z-score was . What does this mean?
3 SDs below mean (faster than average)