Mean and standard deviation from numbers

    • [DOC File]Name:

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      The average run-time for stage one is 5.6 minutes with a standard deviation of 1.2 minutes. The mean run-time for stage two is 12.3 minutes with a standard deviation of 3.8 minutes, and, for stage three, the mean is 6.4 minutes with a standard deviation of 2.8 minutes. What is the mean and standard deviation of the entire process?

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    • [DOC File]Random numbers and stochastic simulations in Excel

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      Returns a pseudo-random number that is log-normally distributed with mean m and standard deviation s. BETINV(RAND(), m, s, l, u) Returns a pseudo-random number that is beta distributed with mean m and standard deviation s, and bounded between l and u (the beta distribution has a central tendency, like the normal, but only a finite range of ...

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    • [DOC File]Mean— A mathematical average of a group of numbers

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      Standard deviation – Standard deviation is a measure of the dispersion of data. In essence, it represents the average distance from the average, which means that the score from one standard deviation below the mean to one standard above the mean represents the “average range”. Statistical packages and spreadsheets like Excel compute these ...

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    • [DOC File]Variance and Standard Deviation Questions

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      Work out the standard deviation. 4. For a set of 10 numbers: Σx = 50 Σx2 = 310. For a set of 15 numbers: Σx = 86 Σx2 = 568. Find the mean and the standard deviation of the combined set of 25 numbers. 5. The number of members (m) in six scout groups was recorded. The summary statistics for these data are: Σm = 150 Σm2 = 3846. a. Work out ...

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    • [DOC File]CALCULATING STANDARD DEVIATION WORKSHEET

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      Sep 26, 2015 · The standard deviation is used to tell how far on average any data point is from the mean. The smaller the standard deviation, he closer the scores are on average to the mean. When the standard deviation is large, the scores are more widely spread on average from the mean. ... Find the sum of the numbers in the Square of the Difference and ...

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    • [DOC File]1

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      Standard Deviation. A measure of spread about the mean is the . standard deviation. It measures how far a typical observation is from the mean. It is sensitive to extreme values, and should be used in the same distributional situations as the mean. The standard deviation of a list of numbers , …, is, This can also be written as,

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    • [DOC File]Mean, Median, Box & Whisker Plots

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      The z-score has a positive value if the element lies above the mean and a negative value if the element lies below the mean. Practice: On six consecutive Sundays, a tow-truck operator received 9, 7,11,10,13, and 7 service calls. Calculate the standard deviation. Heights of adult males have a mean of 69 and a standard deviation of 2.8 inches.

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    • [DOC File]Determining Mean, Median, Mode, & Standard Deviation

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      Find the standard deviation. ∑ = add together. First, you need to determine the mean. The mean of a list of numbers is the sum of those numbers divided by the quantity of items in the list (read: add all the numbers up and divide by how many there are). Then, subtract the mean …

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    • [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

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    • [DOC File]Casio Calculator (FX-83ES)

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      Mean and Standard Deviation on Casio Calculator (FX-83ES) Example 1 – List of numbers. Calculate the mean and standard deviation of the following array of numbers. 8, 8, 9, 11, 14. Press MODE ( 2 ( 1 (this puts calculator in Stats mode) Inputting the data: Press 8 ( = 8 ( = 9 ( = 11 ( = 14 ( = Press AC ( SHIFT ( 1 ( 4 (or 5 on fx-85GT) For ...

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