Topic: Calculating the Standard Deviation
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Answers to Common Questions
How to Calculate Standard Deviation?
To calculate Standard Deviation you take the mean and the deviations and get their squares. Add the two squares. Divide by the total numbers minus 1. The square root of this number is the Standard Deviation. You can find more information he... Read More »
Source: http://answers.ask.com/Science/Physics/how_to_calculate_standard_...
How to Calculate Standard Deviation by Hand
Standard deviation "is the numerical value that describes the spread of scores away from the mean and is expressed in the same units as the original scores. The wider the spread of scores, the larger the standard deviation," according to R.... Read More »
Source: http://www.ehow.com/how_5424647_calculate-standard-deviation-hand...
How to Calculate Standard Deviation in Excel
Standard deviation shows how numbers in a set of data are bunched together. The smaller the standard deviation, the closer the numbers in the data are toward the mean, and the bell curve will be steeper. The larger the standard deviation th... Read More »
Source: http://www.ehow.com/how_6530004_calculate-standard-deviation-exce...
More Common Questions
Answers to Other Common Questions
Standard Deviation, simply put, is a measure of the dispersion of a set of data. The standard deviation statistic tells you how tightly or how loosely the data are clustered around the mean (the mean is the average) in the set. If the examp...
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Source: http://www.ehow.com/how_4870659_standard-deviation-set-of-data.ht...
The standard deviation is a statistic term that defines the midpoint in a set of numbers. It is the midpoint where 50 percent of the numbers fall below and 50 percent fall above. The standard deviation represents the deviation of observatio...
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Source: http://www.ehow.com/how_5527690_calculate-standard-deviation-usin...
Excel is the spreadsheet program included in the Microsoft Office Suite of productivity software. A spreadsheet program manages data through a series of tables. Each data value is placed within an individual cell within the table. Values ca...
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Source: http://www.ehow.com/how_5943723_calculate-deviations-excel-visual...
According to the "Principles of Statistics" by M.G. Blumer, standard deviation is, "a widely used measure of the variability or dispersion, being algebraically more tractable though practically less robust than the expected deviation or ave...
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Source: http://www.ehow.com/how_6181567_calculate-within-two-standard-dev...
DETERMINE "WHAT" YOU ARE MEASURING AND "WHY" The "what" you are measuring should have specific beginning and end points. The "why" should clearly state the purpose of the measurement. Here are a few examples: * WHAT - Over a period of 12 mo...
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Source: http://www.ehow.com/how_5617574_calculate-standard-deviation-easy...
The Standard Deviation will give you an idea of how 'spread apart' the data is. Suppose the average gasoline prices in your town are 2.75 per gallon. A low standard deviation means many of the gas stations will have prices close to that pri...
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Source: http://wiki.answers.com/Q/What_is_the_relevance_of_calculating_st...
1 Obtain a set of numbers you wish to analyze . This is referred to as a population. For example, a test was given to a class of 5 students, and the test results are 12, 55, 74, 79, 90. 2 Population Mean Calculate the mean . Add up all the ...
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Source: http://www.wikihow.com/Calculate-Mean,-Standard-Deviation,-and-St...
