996 prompts matching "Quiz: What a contingency is"
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Quiz: A rod resting against a wall, and the concurrence of its three forces
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WAEC Prep: A probability distribution shown as a bar chart
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WAEC Prep: The variance of a discrete random variable
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Spot My Mistake: Why the probabilities in a distribution must sum to one
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WAEC Prep: The four conditions a binomial situation must satisfy
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WAEC Prep: The probability of at least one event in a Poisson distribution
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WAEC Prep: A Poisson distribution taken over a different length of interval
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Practice: The probability of exactly r events in a Poisson distribution
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Worked Example: The probability of no events at all in a Poisson distribution
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WAEC Prep: Comparing the mean with the variance of a binomial distribution
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WAEC Prep: The mean of a binomial distribution as np
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Practice: The variance of a binomial distribution as npq
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WAEC Prep: The variance of a Poisson distribution over two intervals
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WAEC Prep: Using the mean of a Poisson distribution to find a probability
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WAEC Prep: Why the mean and the variance of a Poisson distribution are equal
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WAEC Prep: Why the total area under the normal curve is one
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Spot My Mistake: The proportion of a normal distribution within one, two and three standard deviations
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WAEC Prep: Comparing two values from different normal distributions by z-score
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WAEC Prep: The standard normal distribution, with mean nought and variance one
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Practice: Using the normal tables when the z-score is negative
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