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What is the significance of standard deviation?

Anonymous

∙ 16y ago

Updated: 10/19/2022

To see how wide spread the results are. If the average (mean) grade for a certain test is 60 percent and the standard deviation is 30, then about half of the students are not studying. But if the mean is 60 and the standard deviation is 5 then the teacher is doing something wrong.

Wiki User

∙ 16y ago

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Q: What is the significance of standard deviation?

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What does the sample standard deviation best estimate?

The standard deviation of the population. the standard deviation of the population.

How does standard deviation of 0 affect statistical significance?

Standard deviation of 0 can only be attained if all observations are identical. That is, the variable in question has just one possible value so statistical considerations are irrelevant.

What is standard deviation of 155.45?

The standard deviation is 0.

What is the standard deviation of a standard normal distribution?

The standard deviation in a standard normal distribution is 1.

What is the standard deviation of 9?

You need more than one number to calculate a standard deviation, so 9 does not have a standard deviation.

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Related Questions

How do you properly incorporate the calculation of standard deviation into a lab report?

To properly incorporate the calculation of standard deviation into a lab report, first calculate the standard deviation of your data set using the appropriate formula. Then, include the standard deviation value in the results section of your report, along with any relevant interpretations or implications. Additionally, consider discussing the significance of the standard deviation in relation to the overall findings of your experiment.

Why is the sample standard deviation used to derive the standard error of the mean?

the sample mean is used to derive the significance level.

What are the assumptions of standard deviation?

The standard deviation is the standard deviation! Its calculation requires no assumption.

What does the sample standard deviation best estimate?

The standard deviation of the population. the standard deviation of the population.

How does standard deviation of 0 affect statistical significance?

Standard deviation of 0 can only be attained if all observations are identical. That is, the variable in question has just one possible value so statistical considerations are irrelevant.

What is standard deviation of 155.45?

The standard deviation is 0.

If quartile deviation is 24. find mean deviation and standard deviation?

Information is not sufficient to find mean deviation and standard deviation.

What is the relationship between standard deviation and variance?

Standard deviation is the square root of the variance.

What is the standard deviation of a standard normal distribution?

The standard deviation in a standard normal distribution is 1.

What is the difference between standard error of mean and standard deviation of means?

Standard error of the mean (SEM) and standard deviation of the mean is the same thing. However, standard deviation is not the same as the SEM. To obtain SEM from the standard deviation, divide the standard deviation by the square root of the sample size.

Why do we need the standard deviation?

The standard deviation is a measure of the spread of data.

What is the standard deviation of 9?

You need more than one number to calculate a standard deviation, so 9 does not have a standard deviation.

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