Choosing Distributions (A Level only) (Edexcel A-Level Mathematics): Quizzes

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Modelling with Distributions
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Which condition is NOT required for binomial distribution?

Continuous outcomes

In the coin example, what is nn (number of trials)?

1010

According to the Empirical Rule, what % of data falls within 1 standard deviation of the mean?

68%

For normal distribution, which relationship is true?

Mean = Median = Mode

What is the z-score when X=185X = 185, μ=175\mu = 175, σ=10\sigma = 10?

11

If P(Z<1)=0.8413P(Z < 1) = 0.8413, what is P(X>185)P(X > 185) in the heights example?

0.1587

Which scenario is best modelled by binomial distribution?

Number of heads in 20 coin flips

What shape is the normal distribution curve?

Symmetrical bell shape

Which is a valid reason to use normal distribution?

Continuous symmetric data

What is the first step in the modelling process?

Identify the situation

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Probability Distributions

Binomial Distribution

Normal Distribution (A Level only)

Choosing Distributions (A Level only)

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Probability Distributions

Binomial Distribution

Normal Distribution (A Level only)

Choosing Distributions (A Level only)

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Probability Distributions

Binomial Distribution

Normal Distribution (A Level only)

Choosing Distributions (A Level only)

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Probability Distributions

Binomial Distribution

Normal Distribution (A Level only)

Choosing Distributions (A Level only)

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