What numbers give a low standard deviation
[DOC File]Brian’s Quick and Easy Statistics Recipes
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The standard deviation (written as. s . or is a measure of the average distance between each point and the mean. The exact equation is given below (s2. is called “variance” and . s. is the standard deviation): The standard deviation can tell you how spread out your data is. It can also tell you if an individual measurement is an outlier or not.
[DOC File]OCR Document
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Chapter 6: CONTINUOUS PROBABILITY DISTRIBUTIONS Section 6.2: The standard normal distribution. Table A-2 gives cumulative areas from the left under the standard normal curve . The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0 ̊ C at the freezing point of water, some thermometers give readings below 0 ̊ (denoted by negative numbers ...
[DOC File]Guide to calculating, interpreting and using effect size
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The ‘standard deviation’ is a measure of the spread of a set of values. Here it refers to the standard deviation of the population from which the different treatment groups were taken. ... (Where NE and NC are the numbers in the experimental and control groups, respectively.) ... If, for example each group had a low standard deviation but ...
[DOC File]Mean— A mathematical average of a group of numbers
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– The difference between the largest and smallest numbers in a group of data. 12,15,15,15,16,18,18,19,21 21-12= 9 Range. Hi Lo. Standard deviation – Standard deviation is a …
[DOC File]Standard deviation - 物理學系
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A large standard deviation indicates that the data points are far from the mean and a small standard deviation indicates that they are clustered closely around the mean. For example, each of the three data sets {0, 0, 14, 14}, {0, 6, 8, 14} and {6, 6, 8, 8} has a mean of 7.
[DOCX File]NAMEXX’S TEST SCORES
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("standard scores" on some tests) are standard scores with an average (mean) of 10 and a . standard deviation. of 3. A scaled score of 11 would also be at the 63rd percentile rank and in Stanine 6. The middle half of these standard scores falls between 8 and 12. T SCORES . have an average (mean) of 50 and a . standard deviation. of 10.
[DOCX File]Describing and Interpreting Data
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75% of the data values are within two standard deviation of the mean. : µ ± 2𝞼 90% of the data values are within three standard deviation of the mean. : µ ± 3𝞼 75% of the data are within 2 standard …
[DOC File]Limit of Detection (LOD)
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Statistically, LOD = 3 STD (Standard Deviation) or as it is called 3Sigma. You have to be careful about LOD detection calculations. It is the calculation of Sigma (STD) that is a bit tricky. The Sigma (STD.) is not a constant; it depends on time, %Pb, substrate, etc.
[DOC File]6A: Characterizing a Data Distribution
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Each normal distribution is characterized by two numbers: the . mean. gives the location of the peak, and. the . standard deviation. gives the width of the peak. A data set that satisfies the following four criteria is likely to have a nearly normal distribution: 1. Most data values are clustered near the mean, giving the distribution a well ...
[DOC File]Once scientists have made careful observations, the ...
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This will give you the "standard deviation" from the mean. A large number would indicate that the scores are dispersed while a relatively smaller number would indicate that the scores are clumped together. Using the above example, Ashley’s scores would result in a smaller standard deviation than would Robert’s scores.
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