Modelling with Distributions (AQA A-Level Mathematics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which condition is NOT required for a binomial distribution?
Which condition is NOT required for a binomial distribution?
Variable probability of success
How many possible outcomes must each trial have in a binomial distribution?
How many possible outcomes must each trial have in a binomial distribution?
Exactly two (success or failure)
What does 'independent trials' mean in binomial distribution?
What does 'independent trials' mean in binomial distribution?
Trials don't affect each other
What shape does a normal distribution have?
What shape does a normal distribution have?
Symmetrical bell shape
In a normal distribution, what is the relationship between mean, median, and mode?
In a normal distribution, what is the relationship between mean, median, and mode?
Mean = Median = Mode
According to the Empirical Rule, what % of data falls within 1 standard deviation of the mean?
According to the Empirical Rule, what % of data falls within 1 standard deviation of the mean?
68%
When should you use a normal distribution to model data?
When should you use a normal distribution to model data?
For continuous variables
What is the z-score formula?
What is the z-score formula?
What is the first step in the modelling process?
What is the first step in the modelling process?
Identify the situation
What % of data falls within 2 standard deviations of the mean in a normal distribution?
What % of data falls within 2 standard deviations of the mean in a normal distribution?
95%