2 5 standard deviations percentile
[DOC File]Normal Curve Percentages
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In fact, for any number (or fraction) of standard deviations, we know exactly what percent of the data fall within that number of standard deviations of the mean. For example, consider the normal curve percentages in the table below. Given a number z of standard deviations, the table gives the percent of data values between the mean ( and ((z(.
[DOCX File]Maine.gov
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16th percentile or above. 1 to 1.4 standard deviations below the mean. 7-15th percentile. A standard score of 78-85. ... A composite standard score of 1.5 to 2 standard deviations below the mean. Language quotient or standard score of 71-77. 3-7th percentile.
[DOC File]Standard Deviation/Standard Score Correspondence
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Score Percentile Description Standard Deviation Sight Word Efficiency 83 13 Below Avg. - 1 SD Phonemic Decoding Efficiency 76 6 Poor - 1.5 SD Total Word Reading Efficiency 75 5 Poor - 1.5 SD Title: Standard Deviation/Standard Score Correspondence Author: teacher Last modified by: teacher Created Date: 9/7/2007 2:38:00 PM
[DOC File]5 - University of Washington
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The WHO cutoff, 2 standard deviations below the mean, is slightly lower than the 5th percentile used in the US. Surveys of the prevalence of poor growth (how common it is in a population) use measures of children's growth at the time of the survey. They use attained growth in length, weight, weight-for-length, or combinations of those measures.
[DOC File]4 - University of Washington
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Small head size (microcephaly) is most often defined as more than two standard deviations below the mean, which corresponds to the 2.3 percentile. Some authors prefer the cutoff of 3 standard deviations below the mean. WIC uses the risk criterion of the 5th percentile.
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