Maths Cheat Sheet Filetype PDF Summary
Dear readers, here we are offering Maths Cheat Sheet Filetype pdf to all of you. It is necessary to find their perimeter in questions related to running/laying wire around a rectangular/square/circular ground.
The ratio between the area of a square and that of another square drawn on the diagonal of the same square will be 1:2. The length of a square/rectangular chord is equal to the perimeter of that square or rectangle. The length of a circular chord is equal to the perimeter or circumference of that circle. The distance covered by a wheel in one revolution will be equal to the circumference of the circular wheel.
Maths Cheat Sheet Filetype PDF
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Sets
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Probability/Stats
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Perms
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P(n,r) = n!/((n−r)!)
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Combs
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C(n,r) = n!/(n−r)!r!
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Sample Space
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Set of all possible outcomes
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Mean
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Sum of set divided by length of set
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Median
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Middle term of an organized
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Take the average of two terms if there is more than one middle term
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Mode
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The number that occurs most in a set
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σ² (Variance)
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Calculate the mean For each number, subtract the mean and square the result Calculate the average of the squared differences, or sum up the squared differences and divide by N, the number of values.
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σ (Standard Deviation)
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Square Root of Variance (σ²)
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