1,316 prompts matching "The alternative sum formula that uses the last term"
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Worked Example: The interquartile range of a set of ordered data
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Quiz: The semi-interquartile range
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Practice: The mean deviation from the mean
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Explain Back: The variance of an ungrouped set of data
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Spot My Mistake: The standard deviation of an ungrouped set of data
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Learn: The moment of a force about a point, and its units
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Worked Example: The sign convention for clockwise and anticlockwise moments
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Quiz: The principle of moments for a body in equilibrium
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Explain Back: Finding the reaction at each support of a loaded beam
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Spot My Mistake: The point at which a loaded beam will tip about its support
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WAEC Prep: A couple, and why its moment is the same about every point
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Learn: The velocity of one body relative to another
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Worked Example: Relative velocity when two bodies move along the same line
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Quiz: Relative velocity when the two motions are at right angles
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Practice: The triangle of velocities for a boat crossing a river
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WAEC Prep: The closest approach of two moving ships
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Worked Example: The common acceleration of two connected particles
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Quiz: The tension in the string joining 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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WAEC Prep: A car towing a trailer, and the force in the tow bar
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