What does the standard deviation mean
[DOC File]Commonly Used @Risk Functions
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(mean,standard deviation) lognormal distribution with specified mean and standard deviation RiskNegbin (s,p) negative binomial distribution with s successes and p probability of success on each trial * RiskNormal (mean,standard deviation) normal distribution with given mean and standard deviation RiskPareto (theta,a) pareto distribution * RiskPert
[DOC File]1
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If the standard deviation stays the same, what new lower mean time does the company need to achieve? Months later, another post-purchase survey shows that new instructions and part labeling did lower the mean assembly time, but only to 50 minutes. Nonetheless, the company did achieve the 60%-in-an-hour goal too. How was that possible?
[DOC File]PROBABILITY TOPICS: HOMEWORK
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The standard deviation for (b) is larger than the standard deviation for (a). We cannot determine if any of the third quartiles for the three graphs is different. Exercise 16. Refer to the following box plots. In complete sentences, explain why each statement is false. Data 1 has more data values above 2 than Data 2 has above 2.
[DOC File]Eight Practice Problems -- Normal Distribution
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What does the standard deviation have to be in order for 96% of the boxes to contain 24 ounces or more? 9. On a standardized test, scores are normally distributed with a mean of 400 and a standard deviation …
[DOC File]Standard deviation - 物理系
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Said more formally, the standard deviation is the root mean square (RMS) deviation of values from their arithmetic mean. For example, in the population {4, 8}, the mean is …
[DOC File]Skew And Standard Deviation: - Highline College
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Standard Deviation Is Like An Average Of The Deviation: When we calculate the standard deviation, it is a way to get “an average deviation”. In this way, we then have a “typical” number we can use in discussions about the spread of the data. In our first step when calculating the standard deviation, we take our mean (typical value of ...
CHAPTER 1
(f) 4 The geometric mean of a series of returns is always larger than the arithmetic mean and the difference increases with the volatility of the series. (f) 5 The expected return is the average of all possible returns. (f) 6 Two measures of the risk premium are the standard deviation and the variance.
[DOC File]AP Statistics Chapter 8 Linear Regression
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Moving 1 standard deviation away from the mean of x moves us _____the standard deviations away from the mean of y. Moving any number of standard deviations away from the mean of x moves us _____ that number of standard deviations away from the mean of …
[DOC File]AP Statistics Review – Probability
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The standard deviation of the standard normal curve is: The mean of the standard normal curve is: What is the rule that describes 1, 2, and 3 standard deviations from the mean? Name: IMPORTANT FOR NORMAL DISTRIBUTIONS: z-score = The z-score represents . E. Sampling Distributions
[DOC File]Standard Deviation/Standard Score Correspondence
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Standard Deviation/Standard/Scaled Score Correspondence Standard Deviation (SD) Standard Score Scaled Score 2 SD above mean 130 or above 16 or above 1 SD above mean Between 115 and 130 Between 13 and 16 Within 1 SD of mean Between 85 and 115 Between 7 and 13 1 SD below mean Between 70 and 85 Between 4 and 7 1.5 SD below mean 77.5 5.5 2 SD below ...
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