1,334 prompts matching "Use the quadratic formula on 3x^2 + 5x + 1 = 0"
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WAEC Prep: Why the mean and the variance of a Poisson distribution are equal
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Quiz: The standard deviation of a Poisson distribution
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Explain Back: Testing whether data are Poisson by comparing mean and variance
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WAEC Prep: The points of inflexion of the normal curve
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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: The standard normal distribution, with mean nought and variance one
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WAEC Prep: The probability that a normal variable exceeds the mean by more than one standard deviation
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WAEC Prep: Finding the mean or the standard deviation from a given probability
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Quiz: The probability in the upper tail of a normal distribution
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Spot My Mistake: When the normal distribution may approximate the binomial
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Worked Example: The continuity correction when approximating a discrete distribution
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Quiz: Reading the wording of a question to decide which distribution applies
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Practice: The components of a vector given its magnitude and direction
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WAEC Prep: The position of a point in space written as a vector
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WAEC Prep: A three-dimensional vector parallel to another
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Quiz: The direction cosines of a vector in three dimensions
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Worked Example: The distance between two points in three dimensions
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WAEC Prep: The magnitude of a vector after multiplication by a scalar
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WAEC Prep: The magnitude of a two-dimensional vector
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