Calculating statistical significance of means

    • [PDF File]Running a t-test in Excel

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      now see the results of your statistical test (unless you selected otherwise, by default the results will open in a new worksheet). ... statistically significant difference between the means of your two trials. Note that in this example, p = 2.6 x 10-16, which is < 0.05, so the difference is significant.

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    • [PDF File]How To Run Statistical Tests in Excel

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      How To Run Statistical Tests in Excel Microsoft Excel is your best tool for storing and manipulating data, calculating basic descriptive statistics such as means and standard deviations, and conducting simple mathematical operations on your numbers. It can also run the five basic Statistical Tests.

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    • [PDF File]Statistics: An introduction to sample size calculations

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      Statistics: An introduction to sample size calculations Rosie Cornish. 2006. 1 Introduction One crucial aspect of study design is deciding how big your sample should be. If you increase your sample size you increase the precision of your estimates, which means that, for any given

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    • [PDF File]Chapter 2: Statistical Tests, Confidence Intervals and ...

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      Chapter 2: Statistical Tests, Confidence Intervals and Comparative Studies ... Statistical significance tests are widely used (and often abused!) in the research ... freedom is the denominator used in calculating s, n–1 in this case.

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    • [PDF File]Calculating and graphing within-subject confidence ...

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      Calculating and graphing within-subject confidence intervals for ANOVA Thom Baguley # Psychonomic Society, Inc. 2011 Abstract The psychological and statistical literature contains several proposals for calculating and plotting confidence intervals (CIs) for within-subjects (repeated measures) ANOVA designs. A key distinction is between ...

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    • [PDF File]Measuring Evaluation Results with Microsoft Excel

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      Measuring Evaluation Results with Microsoft Excel The purpose of this tutorial is to provide instruction on performing basic functions using Microsoft Excel. Although Excel has the ability to perform a large array of mathematical and statistical functions, this resource addresses data entry, and calculating means (averages) for either one time or

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    • [PDF File]Differentiating statistical significance and clinical ...

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      Nursing Research 101 Differentiating. statistical. significance. andclinical. significance. ByElizabethHeavey,PhD,RN,CNM . T. O IMPLEMENT. evidence-based practice, nurses must be able to comprehend and interpret research. That means you need to understand the distinction between statistical significance and clinical significance.

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    • [PDF File]Statistical Testing for Dummies!!!

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      5. Linear Regression – One of the most common and useful statistical tests. This is for comparing the means of Groups along a cont inuum of THREE OR MORE treatment levels, such as a gradually increasing depth of water. It can also be used to compare response means under THREE OR MORE

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    • [PDF File]Two-Sample T-Test from Means and SD’s - Statistical Software

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      Two-Sample T-Test from Means and SD’s Introduction This procedure computes the two -sample t-test and several other two -sample tests directly from the mean, standard deviation, and sample size. Confidence intervals for the means, mean difference, and standard deviations can also be computed.

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    • [PDF File]Effect size, confidence interval and statistical ...

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      changing statistical practice for the better in the biological sciences. Key words: Bonferroni correction, confidence interval, effect size, effect statistic, meta-analysis, null hypothesis significance testing, p value, power analysis, statistical significance. CONTENTS

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