Search for tag: "period of study"

PATH3020E: Welcome & Introduction

From  Amy Ragland 26 plays 0  

Introduction_2300E_2019

From  Megan Neely 79 plays 0  

BIOS 7010 Normal Distributions Part 3.mp4

From  Ivonne Marie Berges 57 plays 0  

ANOVA Models in R - Part 3 (Alternative Parameterizations).mp4

In this video we continue our illustration of one-way ANOVA models in R through Example 11 in Mod13Script.R. You should open this script in RStudio and follow along while watching. In this…

From  Daniel Hall 509 plays 0  

Summary Statistics in R

In Module 13 we cover the implementation of basic statistical methods in R. We begin with a discussion of some functions to compute summary statistics and to characterize univariate distributions. In…

From  Daniel Hall 112 plays 0  

Creating Frequency Tables in R

Frequency distributions (univariate and joint) can be displayed in contingency tables, or cross-tabulations. In this video we show how tapply() can be used to create such tables, but we…

From  Daniel Hall 1,408 plays 0  

Repeatedly Applying Functions to Data - Part 1 (tapply())

The tapply() function is one of several "apply" functions in R that allow a function to operate on data repeatedly. The function tapply() applies a function to groups of observations within…

From  Daniel Hall 172 plays 0  

Subscripts - Part 2 (Matrices & Arrays).mp4

In this video we continue to discuss subscripts, this time concentrating on matrices and arrays. Each dimension of these structures may be subscripted to return a sub-matrix or sub-array of the…

From  Daniel Hall 168 plays 0  

Data Structures in R - Part 1, Vectors

In this video we introduce the various data structures in R, concentrating on vectors.Vectors are the fundamental unit in R, so it is important to understand how to form and manipulate them. While…

From  Daniel Hall 108 plays 0  

Introduction to R - Part 4 (An Example with Statistics and Plots)

This video presents an extended example from Mod8Script.R that deals with some fictitious quiz score data. Here we introduce several new functions for computing summary statistics and the t.test()…

From  Daniel Hall 220 plays 0  

ANOVA - Part 3 (One-way Analysis in PROC GLM)

In this video we implement a one-way ANOVA in PROC GLM, using the same example (Example #8 on Pizza Diameters) as in the previous video. But here we discuss the important difference between the…

From  Daniel Hall 790 plays 0  

ANOVA - Part 2 (one-way analysis with PROC ANOVA)

PROC ANOVA can handle one-way ANOVA models and multi-way ANOVAs with balanced data. It should not be used to fit and make inference from unbalanced multi-way ANOVA models. In this video we introduce…

From  Daniel Hall 451 plays 0  

PROC UNIVARIATE - Part 2 (Example #2)

This video illustrates PROC UNIVARIATE for conducting a one sample t test and examining the assumption of normality underlying the t test. It also features the use of the ODS SELECT statement. PROC…

From  Daniel Hall 217 plays 0  

PROC PRINT and the FORMAT and BY statements

PROC PRINT is a fairly simple procedure that you will use again and again. Learning its basic usage is easy, but this video also covers some additional topics like printing with BY groups; the SUM…

From  Daniel Hall 675 plays 0  

PROC FORMAT and User-Defined Formats

From  Daniel Hall 299 plays 0  

The Program Data Vector and the SAS Built-In Loop

This video describes how SAS processes a data step. It is important to understand that SAS accesses one observation at a time and processes each observation in a temporary location called the program…

From  Daniel Hall 329 plays 0