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Math Statistics Research Methods for the Behavioral Sciences (MindTap Course List)

how mean and standard deviation (SD) describes a distribution of scores.

how mean and standard deviation (SD) describes a distribution of scores.

Solution Summary: The author explains how mean and standard deviation (SD) describe a distribution of scores.

Research Methods for the Behavioral Sciences (MindTap Course List)

Research Methods for the Behavioral Sciences (MindTap Course List)

6th Edition

ISBN: 9781337613316

Author: Frederick J Gravetter, Lori-Ann B. Forzano

Publisher: Cengage Learning

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Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

Chapter 15.2, Problem 5LO

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how mean and standard deviation (SD) describes a distribution of scores.

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Chapter 15.2, Problem 4LO

Chapter 15.2, Problem 6LO

Chapter 15 Solutions

Research Methods for the Behavioral Sciences (MindTap Course List)

Ch. 15.1 - Define the two general categories of statistics,...Ch. 15.1 - Prob. 2LO Ch. 15.2 - Prob. 3LO Ch. 15.2 - Prob. 4LO Ch. 15.2 - Prob. 5LO Ch. 15.2 - Prob. 6LO Ch. 15.3 - Prob. 7LO Ch. 15.3 - Prob. 8LO Ch. 15.3 - Explain how sample size and sample variance...Ch. 15.4 - Identify the characteristics that differentiate...

Ch. 15.5 - Describe the two basic concerns with the...Ch. 15.5 - Describe the basic concern with measuring...Ch. 15 - In addition to the key words, you should also be...Ch. 15 - Prob. 2E Ch. 15 - A researcher who is interested in examining the...Ch. 15 - Construct a frequency distribution histogram or...Ch. 15 - Under what circumstances are the median and the...Ch. 15 - Describe a distribution of scores that has a mean...Ch. 15 - Prob. 7E Ch. 15 - Describe the general concept of sampling error and...Ch. 15 - Briefly explain what is meant when a researcher...Ch. 15 - Prob. 10E Ch. 15 - Describe the relationship between the alpha level...Ch. 15 - Explain how increasing the size of the sample can...Ch. 15 - Prob. 13E Ch. 15 - Identify the appropriate hypothesis test for each...Ch. 15 - Prob. 15E Ch. 15 - Prob. 16E

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