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It means that the material does not meet at least one of the requirements in terms of its quality.

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Burdette Braun

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3y ago

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What does sub standard material mean?

It means that the material does not meet at least one of the requirements in terms of its quality.


What does the word sub mean?

Sub means smaller or under.


What does the standard error of the difference between means mean?

An estimate for the mean of a set of observations is just that - an estimate. Another set of observations will give a different estimates. These estimates for the mean will have a distribution which will have a standard error. If you have two sub-populations, the mean of each sub-population will have a standards error and the se of the difference between the means is a measure of the variability of the estimates of the difference.A typical school work example: the heights of men and of women. There will be a mean height for men, Hm, with a se for men's heights and a mean height for women, Hw, with its own se. The difference in mean heights is Hm - Hw and which will have an estimated se.


What is mean sub number?

The term "mean sub number" typically refers to the average of a set of sub-numbers, which are individual components or values within a larger dataset. To calculate it, you would sum all the sub-numbers and then divide that total by the quantity of sub-numbers. This statistical measure helps to understand the central tendency of the data set. However, the specific context in which "mean sub number" is used may vary, so it's essential to consider the surrounding information for an accurate interpretation.


Is the standard deviation the same as the mean of absolute distances from the mean?

no the standard deviation is not equal to mean of absolute distance from the mean