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Standard error, standard deviation, variance, range, inter-quartile range as well as measures based on other percentiles.

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โˆ™ 2010-04-22 11:24:36
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Algebra

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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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Q: What is a Measure of spread about the mean?
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Does the value of the standard deviation depend on the value of the mean?

The standard deviation is a measure of the spread of data about the mean. Although it is essentially a measure of the spread, the fact that it is the spread ABOUT THE MEAN that is being measured means that it does depend on the value of the mean. However, the SD is not affected by a translation of the data. What that means is that if I add any fixed number to each data point, the mean will increase by that number, but the SD will be unchanged.


What is meant by the standard deviation of a data set?

It is a measure of the spread of the data around its mean value.


Why is calculating the standard deviation an important part of data analysis?

It is a measure of the spread of the results around their expected value.It is a measure of the spread of the results around their expected value.It is a measure of the spread of the results around their expected value.It is a measure of the spread of the results around their expected value.


What standard deviation tells us about a distribution?

It is a measure of the spread of the distribution: whether all the observations are clustered around a central measure or if they are spread out.


Why does the standard deviation get smaller as the individual in a group score more similarly on a test?

Because the standard deviation is a measure of the spread in scores. As individuals score more similarly, the spread gets smaller. Because the standard deviation is a measure of the spread in scores. As individuals score more similarly, the spread gets smaller. Because the standard deviation is a measure of the spread in scores. As individuals score more similarly, the spread gets smaller. Because the standard deviation is a measure of the spread in scores. As individuals score more similarly, the spread gets smaller.

Related questions

What does the standard error mean?

For a sample of data it is a measure of the spread of the observations about their mean value.


What do the variance and the standard deviation measure?

They are measures of the spread of distributions about their mean.


What does variance mean in mathematics?

A variance is a measure of how far a set of numbers is spread out around its mean.


What is strandard deviation?

It is a measure of how much individual values spread around the average.


What you understand about standard deviation?

It is a measure of the spread of a set of observations around their mean value.


Does the value of the standard deviation depend on the value of the mean?

The standard deviation is a measure of the spread of data about the mean. Although it is essentially a measure of the spread, the fact that it is the spread ABOUT THE MEAN that is being measured means that it does depend on the value of the mean. However, the SD is not affected by a translation of the data. What that means is that if I add any fixed number to each data point, the mean will increase by that number, but the SD will be unchanged.


What is mean and standard deviation?

They are statistical measures. For a set of observations of some random variable the mean is a measure of central tendency: a kind of measure which tells you around what value the observations are. The standard deviation is a measure of the spread around the mean.


What is meant by the standard deviation of a data set?

It is a measure of the spread of the data around its mean value.


What does the range provide you that the mean median and mode don't provide you with?

A measure of the spread of the observed values.


Why do we need the quadratic mean How is it better than the average mean?

The quadratic mean is a measure of the spread of values about their arithmetic mean. By definition, the arithmetic mean of the differences will be zero and so adds no information. Another measure is required and that is the quadratic mean.


Why is calculating the standard deviation an important part of data analysis?

It is a measure of the spread of the results around their expected value.It is a measure of the spread of the results around their expected value.It is a measure of the spread of the results around their expected value.It is a measure of the spread of the results around their expected value.


What does the mean absolute deviation tell you about a set of data?

It is a measure of the spread or dispersion of the data.

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