1,334 prompts matching "A sign error in the formula, and how to catch it"
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WAEC Prep: The polygon of forces for several forces in equilibrium
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Learn: Finding two unknown forces by Lami's theorem
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WAEC Prep: A random variable, and the values it may take
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Explain Back: A probability distribution table for a discrete random variable
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Learn: The expectation of a discrete random variable
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Learn: Finding the coefficient of a stated power in an expansion
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WAEC Prep: The four conditions a binomial situation must satisfy
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WAEC Prep: The mean of a binomial distribution as np
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Explain Back: Finding n and p from a given mean and variance
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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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WAEC Prep: The shape and the symmetry of the normal curve
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Learn: The mean, median and mode of a normal distribution
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Quiz: The area under the normal curve, and what it represents
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WAEC Prep: The standard normal distribution, with mean nought and variance one
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Quiz: The probability in the upper tail of a normal distribution
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WAEC Prep: Choosing between a binomial and a Poisson model
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Quiz: Writing a two-dimensional vector as a column
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Learn: The coordinates of a point in three dimensions
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Learn: The magnitude of a three-dimensional vector
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