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Name: _____________________________________ Period ...
Estimated mean:_____ Estimated standard deviation:_____ Actual mean:_____ Actual standard deviation:_____ Did the empirical rule help give you a good estimate of the standard deviation? Now that you know what the actual mean and standard deviation, calculate the following and . Locate these numbers on the dot plot above.
application of standard deviation

[DOC File]Z-Score Practice Worksheet
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A normal distribution of scores has a standard deviation of 10. Find the z-scores corresponding to each of the following values: A score of 60, where the mean score of the sample data values is 40. A score that is 30 points below the mean 40. A score of 80, where the mean score of the sample data values …
standard deviation acceptable

[DOCX File]Describing and Interpreting Data
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The standard deviation is the average variation of the data values from the mean of the values and is the most commonly used measure of variation. Note that the values for the standard deviation are different for a sample and a population.
explaining standard deviation

[DOC File]1 - University of Minnesota Morris
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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,
how to calculate 2 standard deviations

[DOC File]Standard deviation - 物理學系
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If the data points are close to the mean, then the standard deviation is small. As well, if many data points are far from the mean, then the standard deviation is large. If all the data values are equal, then the standard deviation is zero. For a population, the standard deviation can be estimated by a modified standard deviation (s) of a sample.
mean and standard deviation

[DOC File]Standard Deviation Investigation
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One way to estimate a percentile is by finding the data values rank. For example if a state was ranked 45th out of 50 (of values written from lowest to highest), that state would be at the 90th percentile (45 ÷ 50 = 0.9 = 90% ) At what estimated percentile is Georgia? Would this percentile represent a good …
bad standard deviation

[DOCX File]Standard Deviation Valuation Method
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Look at the Mean and Standard Deviation figures. (Note: spreadsheet will auto calculate.) Multiply the 95% Standard Deviation by 2, and add this to the Mean value. Then, multiply the 95% Standard Deviation by 2, and subtract from the Mean value (these are the high and low ends of values).
compare two standard deviations

[DOC File]Measurement Accuracy & Error
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The Standard Deviation σ is similar to the rms-deviation, except the ‘mean-squared-deviation’ is calculated by dividing the ‘sum-of-the-squared-deviations’ by the so-called “number of degrees of freedom” (DOF), instead of N. ... (as determined by the number of measurements and the variations in our set of values). The Standard ...
what is good standard deviation

[DOC File]6A: Characterizing a Data Distribution
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For any data set, at least 89% of all data values lie within 3 standard deviations of the mean. For many applications, Chebyshev’s theorem is unduly conservative: more commonly, over 99% of all data values lie within 3 standard deviations of the mean.
application of standard deviation

[DOC File]Estimating mean and standard deviation from the sample ...
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Deviations of estimate from actual sample mean and standard deviation in 1000 estimations of mean and standard deviation for a Lognormal sample, μ = 5, σ = 0.25, mean = 153, SD = 39.
standard deviation acceptable

Good standard deviation values