1,045 prompts matching "The effect on the standard deviation of adding a constant to every value"
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Practice: A cubic with one real root and two complex ones
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Worked Example: Sentences that are not propositions
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WAEC Prep: The symbols used for and, or and not
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Worked Example: Conjunction in a three-variable truth table
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Practice: Negation combined with a compound statement
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WAEC Prep: A truth table with three propositions in it
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Quiz: Why a conditional with a false antecedent counts as true
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WAEC Prep: Why a conditional and its contrapositive are equivalent
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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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Worked Example: Premises and conclusion
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Quiz: Modus ponens
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Explain Back: Arrangements restricted at the first letter
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Quiz: Why one person is fixed in a circular arrangement
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Practice: Circular arrangements with two people together
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Quiz: Selecting from two groups at the same time
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Practice: A selection that must include one particular member
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Explain Back: A selection that must exclude one particular member
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Quiz: Expanding a bracket to the power four using Pascal's triangle
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