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[PDF File]SPSS Guide: Tests of Differences - iranspss
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SPSS Guide: Tests of Differences ... of whether there is a statistical difference between the test value and the sample mean. Since the t-value is not significant, we reject the null hypothesis that there is a difference, and accept our hypothesis. Independent Samples T-test
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[PDF File]Running a t-test in Excel
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Running a t-test in Excel ... program to perform some statistical tests. However, the shortcut described at the end of this document will work on both ... 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
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[PDF File]Statistics Calculator - Crosstabs Software
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Introduction Main menu Statistics Calculator is an easy-to-use program designed to perform a series of basic statistical procedures related to distributions and probabilities. Most of the procedures are called inferential because data from a sample is used to infer to a population.
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Statistical Equivalence Testing
two-sample t-test is that it may lead the analyst to conclude that a statistically significant difference exists between the mean val-ues when the magnitude of the difference is of no practical im-portance. This is a particular problem when the precision of the measurement is very good; a post hoc explanation of statistical
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[PDF File]2 Sample t-Test (unequal sample sizes and unequal variances)
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Variations of the t-Test: 2 Sample 2 tail 1 2 Sample t-Test (unequal sample sizes and unequal variances) Like the last example, below we have ceramic sherd thickness measurements (in cm) of ... (95%) that there is no statistical difference between the mean values of sample 1 and 2.
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[PDF File]Some Useful Tables for Sensory Tests - Springer
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Some Useful Tables for Sensory Tests The following tables were derived using the MINITAB statistical pack ... Difference test Difference threshold Person who uses a product. Increase in response to differences between two simultaneous or consecutive stimuli.
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[PDF File]How To Run Statistical Tests in Excel - cbgs.k12.va.us
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How To Run Statistical Tests in Excel ... difference amidst all that “noise.” More precisely, it partitions the natural variance within the groups (the noise) from the variance between the groups (the signal). ... second test called a “Multiple Comparisons ” test (like Tukey’s test) in …
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Testing differences in proportions - Griffith University
In this paper we explore the most commonly used statistical tests to compare groups of data at the nominal level of measurement. The chosen statistical tests are the chi-square test, chi-square test for goodness of fit, chi-square test for independence, Fisher's exact test, McNemar's test and the use of confidence intervals for proportions.
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[PDF File]Tests for the Difference Between Two Poisson Rates
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Tests for the Difference Between Two Poisson Rates Introduction ... Mathews (2010) proposed two test statistics that can be used to test statistical hypotheses about the rate difference. ... Tests for the Difference Between Two Poisson Rates . . -. -
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Comparison of Triangle and Tetrad Discrimination ...
tetrad. Effect size and test power for each test were also calculated and produced similar results. In eight of the experiments completed, the reduction in effect size for the tetrad offset the statistical power advantage, making the triangle method more beneficial for these products. Significant differences (p
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Test of statistical difference calculator