Paired t-Test in R with Examples | R Tutorial 4.7 | MarinStatsLectures HD

Paired t-Test in R with Examples: Learn how to conduct the paired t-test (matched pairs t-test) and calculate confidence interval in R for means of two paired or dependent groups; Find R practice dataset (BloodPressure) here: (https://statslectures.com/r-scripts-datasets) Related: Paired t Test in Statistics Video: https://youtu.be/Q0V7WpzICI8 ; Wilcoxon Signed Rank Test in Statistics Video: https://youtu.be/v4ZHlTbTOK8 Best Statistics & R Programming Language Tutorials: ( https://goo.gl/4vDQzT ) ►► Want to support us? You can Donate (https://bit.ly/2CWxnP2), Share Our Videos, Leave Comments or Give a us Like! In this R video tutorial, we will learn how to conduct the paired t-test (matched pairs t-test or dependent t test) in R. This test is used to compare the means of two paired or dependent populations. It essentially becomes the univariate (one sample) t test, by taking the difference in observations in the 2 groups, and then conducting a test on the mean difference. The paired t-test and confidence interval in statistics are parametric methods appropriate for examining the difference in means for 2 populations that are paired or dependent on one another. We will learn to use various functions and arguments in R statistical software such as "t.test”, "paired", "conf.level", "boxplot", “mu”, and more to perform this test. These video tutorials are useful for anyone interested in learning data science and statistics with R programming language using RStudio. Table of Content: 0:00:09 When should we use the paired t-test and confidence interval in statistics and in research? 0:00:55 how to access the help menu in R for paired t-test 0:01:05 how to use boxplots in R to visualize and interpret the difference in means for two populations that are paired or dependent on one another 0:01:21 how to use scatterplots in R programming language to visualize the data as paired or the changes in individuals 0:01:39 how to add a line for X=Y (eg. before= after) in a paired data plot using the "abline" function in R 0:01:58 how to interpret the scatterplot of paired or dependent data 0:02:32 how to do the paired t-test in R using "t.test" command/ function 0:02:40 how to ask R to test if the mean difference is 0 in a paired t-test using the "mu" argument 0:02:47 how to conduct a two-sided t-test in R using the "alt" argument 0:02:54 how to ask R if the data is paired when conducting t-test using "paired" argument 0:03:02 how to specify the level of confidence interval in R statistical software for the paired t-test using the "conf.level" argument 0:03:35 how does the order that X and Y are entered in "t.test" command/function in R for a paired-t-test changes the results ► ► Watch More: ► Intro to Statistics Course: https://bit.ly/2SQOxDH ►Data Science with R https://bit.ly/1A1Pixc ►Getting Started with R (Series 1): https://bit.ly/2PkTneg ►Graphs and Descriptive Statistics in R (Series 2): https://bit.ly/2PkTneg ►Probability d