Standard definition, something considered by an authority or by general consent as a basis of comparison; an approved model. Ratios are unitless.

Standard Error: A standard error is the standard deviation of the sampling distribution of a statistic. Standard deviation is a measure of the dispersion of a set of data from its mean . Great question, I haven't answered this question anywhere before. In other words, standard deviation measures how volatile a set of data is. What is high for one could be low for another. What is the definition of standard deviation? You will agree that no number is high or low, unless there is a reference. To give an example/ case that I have seen – Zener diodes -of say 7.5 V, tolerance =+/- 5% , or total of 750 mV The first video is a standard definition video. The customer or competition will decide whether a standard deviation value is high or low.

Standard Deviation is a common term used in deals involving stocks, mutual funds, ETFs and others. What Does Standard Deviation Mean?

Definition: Standard Deviation (SD) is a statistical measure that captures the difference between the average and the outliers in a set of data. Let's first dive into why ratios make sense for comparing quantities.

Standard Deviation is also known as volatility. It was very probably captured from a high-definition source and resized to standard definition so the video file wouldn’t be so large.
See more. It has 352 lines and it’s in widescreen format, made to fit the aspect ratio of old televisions (4:3 aspect ratio).

Standard deviation provides investors a mathematical basis for decisions to be made regarding their investment in financial market. But the answer tends to be about ratios.