up to, 1  as far as or approaching (a certain part, degree, point, etc.): She went wading up to her knees. I am up to the eighth lesson. 2  in full realization or attainment of: He worked up to president of the company. 3  as many as; to the limit of: The car will seat up to five persons.
The standard deviation is a measure of how the data is clustered about the mean. For large sets of data, approximately 68.3% of the data lies within one standard deviation of the mean and approximately 95.4% of the data lies within two standard deviations of the mean.
Standard deviation is a measure of how spread out numbers are from the average of a data set. It is not the same as average or mean deviation or absolute deviation, where the absolute value of each distance from the mean is used, so be careful to apply the correct steps when calculating deviation.