1,045 prompts matching "The effect of one extra value on the mean"
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Explain Back: Finding a coefficient so that a stated expression is a factor
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Spot My Mistake: The factor theorem applied to a quartic
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Show All Working: What the factor theorem says about the roots
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Show All Working: Factorising a polynomial with fractional roots
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Common Mistakes: Factorising fully, and knowing when to stop
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Worked Example: How many roots a cubic equation has
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Common Mistakes: A cubic equation arising from a volume problem
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Worked Example: Sentences that are not propositions
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Common Mistakes: Translating a symbolic statement back into English
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Worked Example: Conjunction in a three-variable truth table
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Quiz: Why a conditional with a false antecedent counts as true
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Show All Working: Why a conditional and its converse are not equivalent
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Practice: What logical equivalence means
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Show All Working: The distributive laws in logic
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Worked Example: What a contradiction is
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Quiz: What a contingency is
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Explain Back: Showing that a statement is a contradiction
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WAEC Prep: A tautology used to justify a rule of algebra
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Common Mistakes: Deciding between tautology, contradiction and contingency
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Worked Example: Premises and conclusion
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