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Earn +20 ptsQ: How do you calculate plus or minus one standard deviation?
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What percentage of observations of a normal distribution is represented by the mean plus or minus 1.96 standard deviation?
It is 95%
What percentage of observations of a normal distribution is reprented by the mean plus or minus 1.96 standard deviations?
The probability of the mean plus or minus 1.96 standard deviations is 0. The probability that a continuous distribution takes any particular value is always zero. The probability between the mean plus or minus 1.96 standard deviations is 0.95
When does 1 plus 1 equal 3 and 2 minus 1 equal 2?
When you are using non-standard definitions of "plus" and "minus", or of "equal".
What is the standard formula of quadratic quotation?
negative b plus or minus the square root of b squared minus 4AC all over 2 A
The Empirical Rule indicates that we can expect to find what proportion of the sample included within plus or and - 2 standard deviation?
The proportion is approx 95%.
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