Normal distributions (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 data type is suitable for normal distribution?
What data type is suitable for normal distribution?
Continuous
What shape does a normal distribution curve have?
What shape does a normal distribution curve have?
Bell-shaped
What percentage lies within 2σ of the mean?
What percentage lies within 2σ of the mean?
95%
How to find standard deviations from the mean?
How to find standard deviations from the mean?
Use a formula
If μ = 10 and σ = 2, what is 14's z-score?
If μ = 10 and σ = 2, what is 14's z-score?
2
In a normal distribution, what does 0.15% indicate about data points beyond 3 standard deviations?
In a normal distribution, what does 0.15% indicate about data points beyond 3 standard deviations?
It is the tail probability
What is the mean if 50% of values are above 12?
What is the mean if 50% of values are above 12?
12
What is the empirical rule also known as?
What is the empirical rule also known as?
68-95-99.7 rule
What does 'greater than' mean in a normal curve?
What does 'greater than' mean in a normal curve?
Right area
Why sketch a normal distribution curve?
Why sketch a normal distribution curve?
To visualize data