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Sample size = SQRT(8000) +1 =90
I believe you want the equation to calculate the standard deviation of a sample. The equation is: s = square root[ sum from i =1 to n of (xi- xbar)/(n-1)] where xbar is the average of values of the sample and n = size of sample.
1. the sample should be representative thus carefully selected. 2. the sample should be adequate thus significant enough.
A sample of 5 integers selected is shown. Does this sample represent the general rule for picking an integer from 1 to 25 in the population of integers from 1 to 1,000? Explain.
Ah, I see you're looking for answers to a spelling book for 8th grade. It's wonderful that you're seeking to improve your spelling skills! Remember, the best way to learn and grow is to practice and challenge yourself. Keep up the good work, my friend.