1,331 prompts matching "Quiz: Selecting from two groups at the same time"
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WAEC Prep: The standard deviation of grouped data using an assumed mean
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Common Mistakes: The coefficient of variation, for comparing two sets
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Show All Working: The time at which two bodies are nearest one another
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Common Mistakes: The relative displacement of two bodies after a given time
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Worked Example: The common acceleration of two connected particles
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Spot My Mistake: Two particles on a pulley at the top of an inclined plane
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Spot my mistake: Assuming AB and BA give the same matrix
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Spot my mistake: Negating the leading diagonal and swapping the other two entries when inverting a 2 by 2 matrix
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Spot my mistake: Treating the kilogram and the kilogram weight as the same unit
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Spot my mistake: Treating the dot product of two vectors as another vector
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Spot my mistake: Differentiating a product by multiplying the derivatives of its two factors
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Spot my mistake: Leaving out the constant of integration when velocity is found from acceleration
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Spot my mistake: Treating the action and the reaction of Newton's third law as forces acting on the same body
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Spot my mistake: Reading a strong correlation between two variables as proof that one causes the other
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Teach me the Poisson distribution from scratch
I am in SS 3. Teach me what the Poisson distribution is, when we use it instead of binomia
Quiz: Writing a two-dimensional vector as a column
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WAEC exam question: two unknowns from remainder and factor conditions
I am in SS 3. Give me a WAEC-style polynomial question where a cubic has two unknown coeff
Quiz: Multiplying a matrix by minus one
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Quiz: Checking an inverse by multiplying to get the identity
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Quiz: Checking a 3 by 3 inverse by multiplication
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