Statistical Analyses Supplement
... the associated experiment. Therefore the method used to calculate the standard error must be consistent with how the data was collected. In this study the five substrates analyzed (CAT, 4MC, etc.) were chosen to represent five categories or classes within the universe of all possible substrates. Sim ...
... the associated experiment. Therefore the method used to calculate the standard error must be consistent with how the data was collected. In this study the five substrates analyzed (CAT, 4MC, etc.) were chosen to represent five categories or classes within the universe of all possible substrates. Sim ...
Statistical Report Writing Sample No.5. Introduction. A federal
... the variable “Change” since it is used for a statistical test. The histogram (above left) displays neither a center nor symmetry of distribution. Rather, it is bimodal, suggesting that there are two distinct populations to which the effect of device could be different. The QQ plot (above right) als ...
... the variable “Change” since it is used for a statistical test. The histogram (above left) displays neither a center nor symmetry of distribution. Rather, it is bimodal, suggesting that there are two distinct populations to which the effect of device could be different. The QQ plot (above right) als ...
T-tests, Anovas & Regression
... differences are due to chance Higher the t score, smaller the p value, more unlikely to be due to chance Can compare sample with population or 2 samples, paired or unpaired ANOVA/F tests are similar but use variances instead of means and can be applied to more than 2 groups and other more complex sc ...
... differences are due to chance Higher the t score, smaller the p value, more unlikely to be due to chance Can compare sample with population or 2 samples, paired or unpaired ANOVA/F tests are similar but use variances instead of means and can be applied to more than 2 groups and other more complex sc ...
Document
... To compare the means, both populations should be normally distributed. However, in practice, it is enough that the two distributions have similar shapes and that the sample data contain no strong outliers. ...
... To compare the means, both populations should be normally distributed. However, in practice, it is enough that the two distributions have similar shapes and that the sample data contain no strong outliers. ...
QUANTITATIVE VERSUS QUALITATIVE RESEARCH
... Evaluate a class on a one to five Lickert Scale where one is poor and five is excellent. What scale of data is this? Ordinal N=100 students. Three circumstances: If the mean = 1.0 or 5.0 it is clear that all were agreed. BUT what if the mean was 3.0? What problem do you see? We cannot know what this ...
... Evaluate a class on a one to five Lickert Scale where one is poor and five is excellent. What scale of data is this? Ordinal N=100 students. Three circumstances: If the mean = 1.0 or 5.0 it is clear that all were agreed. BUT what if the mean was 3.0? What problem do you see? We cannot know what this ...
