Standardised scores (AQA GCSE Statistics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What does a positive standardised score indicate?
What does a positive standardised score indicate?
Above average performance
What is the formula for standardised scores?
What is the formula for standardised scores?
(score - mean) / std dev
What is the standardised score for a student who scores 70 with a mean of 60 and std dev of 5?
What is the standardised score for a student who scores 70 with a mean of 60 and std dev of 5?
2
How does a larger standard deviation affect standardised scores?
How does a larger standard deviation affect standardised scores?
Scores become more spread out
How do you interpret a standardised score of -1?
How do you interpret a standardised score of -1?
Below average
What is the standardised score for a value of 70 with mean 50 and std dev 10?
What is the standardised score for a value of 70 with mean 50 and std dev 10?
2
What does a standardised score of 0 mean?
What does a standardised score of 0 mean?
At average
Why are standardised scores useful?
Why are standardised scores useful?
Compare different tests
What is the standardised score for a student who scored 80 with a mean of 70 and std dev of 5?
What is the standardised score for a student who scored 80 with a mean of 70 and std dev of 5?
2
What does a standardised score of 1.5 indicate?
What does a standardised score of 1.5 indicate?
Above average