Independent samples t-test, Levene’s test, effect size, and normality in RStudio / R
In this video, I have discussed how to run t test in RStudio. In addition, I have shown how to check the assumptions of t test, i.e., Levene’s test of equality of variances, effect size (Cohen's d & Hedge's g), and univariate normality (skewness and kurtosis). The following link provide
From playlist Independent Samples t-Test
Levene’s Test of Homogeneity of Variance in SPSS (11-3)
One important assumption about the Independent-Samples t Test is that the variances in the sample groups are approximately equal. We assume that the samples have “homogeneity of variance.” Levene’s Test for Equality of Variances is a test of whether the variances of the two samples/groups
From playlist WK11 Independent Sample t Tests and Paired t Tests - Online Statistics for the Flipped Classroom
Solar panel performance shoot-out - Part 3
This is a performance test between two 55 watt solar panels, one is a monocrystalline and the other is an Amorphous / thin film panel.
From playlist Solar Panel Reviews, Testing and Experiments
Solar panel performance shoot-out - Part 1
This is a performance test between two 55 watt solar panels, one is a monocrystalline (correction from what I said in the video) and the other is an Amorphous / thin film panel.
From playlist Solar Panel Reviews, Testing and Experiments
Overview of the F-Test. What it is and how it works with general steps and assumptions.
From playlist F Test
Solar panel performance shoot-out - Part 4
A little update on the performance test between two 55 watt solar panels, one is a monocrystalline and the other is an Amorphous / thin film panel.
From playlist Solar Panel Reviews, Testing and Experiments
How to do an Independent Samples t Test in SPSS (11-5)
Using a dog-training example, we compare two types of reinforcement training using an independent samples t-test. We work through the five steps of hypothesis testing, and conduct the independent samples t-test in SPSS. We evaluate the Levene’s Test for Equality of Variances and compute C
From playlist WK11 Independent Sample t Tests and Paired t Tests - Online Statistics for the Flipped Classroom
How to do a One-Way ANOVA in SPSS (12-6)
Using the same example from the Wizard of Oz involving Munchkins and wicked witches in various regions that we used learning ANOVA by hand, we are going to learn about conducting a one-way ANOVA using SPSS. We will create the dataset in SPSS, conduct a one-way ANOVA, and interpret the resu
From playlist WK12 One-Way ANOVA - Online Statistics for the Flipped Classroom
Monocrystalline vs Polycrystalline: Part 2 - Quick update
A quick update after the initial installation of the polycrystalline panel...some interesting results this early on.... I introduce the LeCroy WaveJet 300A Oscilloscope I received from Comtest. I also show a pamphlet of the Amprobe Solar analyser 600 (testing, maintenance, troubleshoot
From playlist Solar Panel Reviews, Testing and Experiments
Confused about what a z-score is and how it relates to a bell curve? This short video explains in plain English what a z score is and what it's used for. Check out my Statistics Handbook: https://www.statisticshowto.com/the-practically-cheating-statistics-handbook/ Thanks for your support!
From playlist z-test
Test done with Blender 2.5. http://www.kostackstudio.de
From playlist Random Blender Tests
A Gentle Introduction to the Independent Samples t Test (11-2)
The independent samples t test compares one sample mean to another sample mean. It is widely used in statistics and will help us understand other statistical tests that we will learn later, such as ANOVA. The Independent Samples t Test, sometimes called “t for two,” is a parametric procedu
From playlist WK11 Independent Sample t Tests and Paired t Tests - Online Statistics for the Flipped Classroom
R - Two-Way Between Subjects ANOVA Lecture 1
Lecture materials and assignment available at statisticsofdoom.com. https://statisticsofdoom.com/page/graduate-statistics/ Used in the following courses: Graduate Statistics
From playlist Learn R + Statistics
R - Two Way Between Subjects ANOVA Example
Lecturer: Dr. Erin M. Buchanan Missouri State University Spring 2016 This video covers theory on how to work a two-way between-subjects ANOVA from power, data screening, ANOVA, post hoc, effect size, and graphs using ggplot2. Lecture materials and assignments available at statisticsofd
From playlist Learn and Use G*Power
SPSS - Independent t-test Example
Lecturer: Dr. Erin M. Buchanan Missouri State University Spring 2015 This video covers how to run and read the output from an independent t-test in SPSS. Lecture materials and assignment available at statisticsofdoom.com. https://statisticsofdoom.com/page/basic-statistics/
From playlist PSY 200 (SPSS) Undergraduate Statistics with Dr. B
Foundations of ANOVA – Assumptions and Hypotheses for One-Way ANOVA (12-3)
The assumptions for One-Way ANOVA require a scale-level dependent variable and a categorical independent variable, typically with three or more levels. Check for outliers, independence, and normality. The non-parametric alternative is the Kruskal-Wallis One Way ANOVA test. The null hypothe
From playlist WK12 One-Way ANOVA - Online Statistics for the Flipped Classroom
A Gentle Introduction to Paired Samples t Test (11-6)
The paired samples t test uses repeated measures in which the same subjects are used in all treatment conditions. This is typical of a “before and after” design. Another way to use a paired samples t test is with matched pairs. It tests whether the average difference between two measureme
From playlist WK11 Independent Sample t Tests and Paired t Tests - Online Statistics for the Flipped Classroom
Calculus, Comparison Test (LCT), 11 4 #7
Calculus, Algebra and more at www.blackpenredpen.com Differential equation, factoring, linear equation, quadratic equation, derivatives, integrals, stewart calculus 7th edition, algebra.
From playlist Calculus, Sect 11.4, Direct & Limit Comparison Test
Independent Samples t-test in Excel | effect size calculator
In this video, I show how to do independent samples t-test analysis in Excel. Since excel does not provide the option to test the homogeneity of variance and effect size, I introduce an easy-to-use calculator for these. Effect size calculator: https://www.socscistatistics.com/effectsize/d
From playlist Independent Samples t-Test