The concepts of standard deviation

    • [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.

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    • [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. ... INTRODUCTION: Draw a line between the matching concepts/statements (12 pts)

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    • [DOCX File]I.Definitions and Concepts - Brigham Young University

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      I.Definitions and Concepts Explain the effect of the scale (standardized) function on variables and explain how scaled variables are used. Standardized or scaled variables first subtract the mean to yield a deviation and then divide by the standard deviation. This essentially coverts a deviation in the number of standard deviations.

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    • [DOC File]Review of Basic Statistical Concepts

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      and standard deviation , the . standardized. value . For example, if incomes have a mean and standard deviation of $48,000 and $16,000, respectively, then someone making $56,000 has a standardized income of because their income is one-half standard deviation above the mean income.

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    • [DOC File]Sample Test Questions -- Test 1 - University of Florida

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      c) The standard deviation is better for describing skewed distributions. d) The standard deviation is in the same units as the original data. Questions 21-23 use the following information. Suppose you operate a diamond mine in South Africa. The daily production of diamonds is approximately normally distributed with a mean of 7,500 tons of ...

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    • [DOC File]Section 1

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      Sample Standard Deviation – square root of the sample variance. Key Concepts: Sample variance is found by dividing by (n – 1) to keep it an unbiased (since we estimate the population mean, μ, by using the sample mean, x‾) estimator of population variance. The larger the standard deviation, the more dispersion the distribution has

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    • [DOC File]CHAPTER 5

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      Risk concepts Answer: e Diff: E. Which of the following statements is most correct? a. Risk refers to the chance that some unfavorable event will occur, and a probability distribution is completely described by a listing of the likelihood of unfavorable events. ... The standard deviation of the portfolio will be less than the weighted average ...

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    • [DOC File]Review of Basic Statistical Concepts

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      A continuous probability distribution. The normal distribution is a symmetrical distribution with a mean, , and a standard deviation, . Example. The ticket sales for events held at the new civic center are believed to be normally distributed with a mean of 12,000 and a standard deviation of 1,000.

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    • [DOC File]REVIEW : KEY CONCEPTS/TERMS ( * items are advanced topics ...

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      Standard deviation – a measure of spread or variation in a distribution, equals the square root of the average squared deviation from the sample mean. The standard deviation squareed is called the variance of the distribution.

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    • [DOCX File]STANDARD

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      facilitates teacher planning by identifying the key concepts, knowledge, and skills that should be the focus of instruction for each standard. The . ... median, mode, variance, standard deviation, interquartile range, range, and outliers. Understanding the Standard. Essential Knowledge and Skills.

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