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Data & Univariate Statistics
... • The “catch” is that the formulas for these statistics (and all the ones you will learn this semester) depend upon the assumption that the data come from a population with a normal distribution for that variable. • Data have a normal distribution if they have a certain shape, which is represented b ...
... • The “catch” is that the formulas for these statistics (and all the ones you will learn this semester) depend upon the assumption that the data come from a population with a normal distribution for that variable. • Data have a normal distribution if they have a certain shape, which is represented b ...
6. Sample Mean Under Normality
... An arlicle in the 1993 volume of the TransactionS of the American Fisheries Sociery reports the results of a study to investigate the mercury contamination in largemouth bass. A sample of fish was selected from 53 Florida lakes and mercury concentration in the muscle tissue was measured (ppm). The m ...
... An arlicle in the 1993 volume of the TransactionS of the American Fisheries Sociery reports the results of a study to investigate the mercury contamination in largemouth bass. A sample of fish was selected from 53 Florida lakes and mercury concentration in the muscle tissue was measured (ppm). The m ...
December 19, 1998
... The SSHA is a test that measures motivation and study habits. Scores range from 0 to 200. The mean score for U. S. college students is about 120 and the standard deviation is 20. A teacher suspects that older students have different motivation and study habits. To investigate this idea the test was ...
... The SSHA is a test that measures motivation and study habits. Scores range from 0 to 200. The mean score for U. S. college students is about 120 and the standard deviation is 20. A teacher suspects that older students have different motivation and study habits. To investigate this idea the test was ...
Worksheet 8 Shifting and Scaling Data, z-scores
... higher. Then in the 1500-meter run the other one runs 5 seconds faster. Who wins? It depends on knowing whether it is harder to jump an inch higher or run 5 seconds faster. We have to be able to compare two fundamentally different activities involving different units. Standard deviations to the resc ...
... higher. Then in the 1500-meter run the other one runs 5 seconds faster. Who wins? It depends on knowing whether it is harder to jump an inch higher or run 5 seconds faster. We have to be able to compare two fundamentally different activities involving different units. Standard deviations to the resc ...
Word - The University of British Columbia
... data on biomass (kg) of Protea shrubs, and measure the shrub heights. Since biomass requires destructive sampling of the plants, you would like to develop an equation to estimate biomass from shrub heights. You have a very limited budget and collect data for only 10 plants. Also, you do not have mon ...
... data on biomass (kg) of Protea shrubs, and measure the shrub heights. Since biomass requires destructive sampling of the plants, you would like to develop an equation to estimate biomass from shrub heights. You have a very limited budget and collect data for only 10 plants. Also, you do not have mon ...
Measures of Variation - Milan C-2
... Calculate the mean of the sample. Find the difference between each entry (x) and the mean. These differences will add up to zero. Square the deviations from the mean. Sum the squares of the deviations from the mean. Divide the sum by (n 1) to get the variance. Take the square root of the variance ...
... Calculate the mean of the sample. Find the difference between each entry (x) and the mean. These differences will add up to zero. Square the deviations from the mean. Sum the squares of the deviations from the mean. Divide the sum by (n 1) to get the variance. Take the square root of the variance ...