In a normal distribution, about 68% of the scores are within one standard deviation of the mean and about 95% of the scores are within two standards deviations of the mean.
If you want to change selection, open document below and click on "Move attachment"
Subject 6. Measures of Dispersion
An important attribute of the standard deviation as a measure of spread is that if the mean and standard deviation of a normal distribution are known, it is possible to compute the percentile rank associated with any given score. <span>In a normal distribution, about 68% of the scores are within one standard deviation of the mean and about 95% of the scores are within two standards deviations of the mean.
The standard deviation has proven to be an extremely useful measure of spread in part because it is mathematically tractable. Many formulas in inferential statistics use th
Summary
status
not read
reprioritisations
last reprioritisation on
suggested re-reading day
started reading on
finished reading on
Details
Discussion
Do you want to join discussion? Click here to log in or create user.