WebJan 22, 2024 · The following example shows how to perform a t-test for the slope of a regression line in R. Example: Performing a t-Test for Slope of Regression Line in R. Suppose we have the following data frame in R that contains information about the hours studied and final exam score received by 12 students in some class: WebAug 19, 2024 · The code assumes data x1 and x2 are present, does the scrambling with the function sample (gp), and (conveniently, but somewhat inefficiently) uses t.test ()$stat to get the t statistics of the permuted samples. The P-value 0.0003 indicates rejection of the null hypothesis. (Results may vary slightly from one run to the next.)
How to Perform t-Test for Slope of Regression Line in R
WebIndependent Samples T-test Example in R In this example, we will test to see if there is a statistically significant difference in the miles per gallon (mpg) of 4-cylinder automobiles and 8-cylinder automobiles. Dependent response variable: mpg = Miles per gallon Independent categorical variable: cyl = 4 or 8 cylinder automobiles WebMay 22, 2024 · By default, R computes the Welch t-test, which is the safer one. The two methods give very similar results unless both the group sizes and the standard deviations are very different. In this article, you will learn … hemoglobin a1c 13.7
How to Perform a One Sample T-Test in R - Statology
WebAgain, the t-test function can be used on a data frame with a grouping variable, or on two vectors. It relies the relative position to determine the pairing. If you are using long-format data with a grouping variable, the first row with group=1 is … WebAug 3, 2024 · A one sample t-test is used to determine whether or not the mean of a population is equal to some value. You can use the following basic syntax in R to perform a one sample t-test: t.test(data, mu=10) The following example shows how to … WebMar 13, 2015 · Equal variances. t.test (percent ~ sex, data=tips, var.equal=TRUE) # Two Sample t-test # # data: percent by sex # t = 1.0834, df = 242, p-value = 0.2797 # … lane home solutions - bellamy slate sofa