Give example of an injective map from a to b
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Step-by-step explanation:
To prove a function is bijective, you need to prove that it is injective and also surjective. "Injective" means no two elements in the domain of the function gets mapped to the same image. "Surjective" means that any element in the range of the function is hit by the function.
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Step-by-step explanation:
To calculate the standard deviation for a sample of N measurements:
Sum all the measurements and divide by N to get the average, or mean.
Now, subtract this average from each of the N measurements to obtain N "deviations".
Square each of these N deviations and add them all up.
Divide this result by. (N − 1)
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