Posts Tagged ‘ Statistical Graphics ’

Decile calibration plots in SAS

May 16, 2018
By
Decile calibration plots in SAS

In my article about how to construct calibration plots for logistic regression models in SAS, I mentioned that there are several popular variations of the calibration plot. The previous article showed how to construct a loess-based calibration curve. Austin and Steyerberg (2013) recommend the loess-based curve on the basis of

The post Read more »

Tags: , ,
Posted in SAS | Comments Off on Decile calibration plots in SAS

Calibration plots in SAS

May 14, 2018
By
Calibration plots in SAS

A logistic regression model is a way to predict the probability of a binary response based on values of explanatory variables. It is important to be able to assess the accuracy of a predictive model. This article shows how to construct a calibration plot in SAS. A calibration plot is

The post Read more »

Tags: , ,
Posted in SAS | Comments Off on Calibration plots in SAS

Order variables in a heat map or scatter plot matrix

May 2, 2018
By
Order variables in a heat map or scatter plot matrix

Order matters. When you create a graph that has a categorical axis (such as a bar chart), it is important to consider the order in which the categories appear. Most software defaults to alphabetical order, which typically gives no insight into how the categories relate to each other. Alphabetical order

The post Read more »

Tags: , ,
Posted in SAS | Comments Off on Order variables in a heat map or scatter plot matrix

The 80-20 rule for blogs

April 23, 2018
By
The 80-20 rule for blogs

You've probably heard about the "80-20 Rule," which describes many natural and manmade phenomena. This rule is sometimes called the "Pareto Principle" because it was discovered by Vilfredo Pareto (1848–1923) who used it to describe the unequal distribution of wealth. Specifically, in his study, 80% of the wealth was held

The post Read more »

Tags: , ,
Posted in SAS | Comments Off on The 80-20 rule for blogs

A zipper plot for visualizing coverage probability in simulation studies

March 26, 2018
By
A zipper plot for visualizing coverage probability in simulation studies

Simulation studies are used for many purposes, one of which is to examine how distributional assumptions affect the coverage probability of a confidence interval. This article describes the "zipper plot," which enables you to compare the coverage probability of a confidence interval when the data do or do not follow

The post Read more »

Tags: , ,
Posted in SAS | Comments Off on A zipper plot for visualizing coverage probability in simulation studies

Merged legends: Overlay a symbol and line in a legend item

February 12, 2018
By
Merged legends: Overlay a symbol and line in a legend item

Did you know that SAS can combine or "merge" a symbol and a line pattern into a single legend item, as shown below? This kind of legend is useful when you are overlaying a group of curves onto a scatter plot. It enables the reader to quickly associate values of

The post Read more »

Tags: ,
Posted in SAS | Comments Off on Merged legends: Overlay a symbol and line in a legend item

Create a stacked band plot in SAS

January 31, 2018
By
Create a stacked band plot in SAS

This article shows how to construct a "stacked band plot" in SAS, as shown to the right. (Click to enlarge.) You are probably familiar with a stacked bar chart in which the cumulative amount of some quantity is displayed by stacking the contributions of several groups. A canonical example is

The post Read more »

Tags: ,
Posted in SAS | Comments Off on Create a stacked band plot in SAS

How much does it cost to give birth in the US?

January 17, 2018
By
How much does it cost to give birth in the US?

Money magazine (Jan/Feb 2018) contains an article about how much it costs to give birth in the US. The costs, which are based on insurance data, include prenatal care and hospital delivery but exclude infant care. The data are compiled for each state (including Washington, DC) and by type of

The post Read more »

Tags: ,
Posted in SAS | Comments Off on How much does it cost to give birth in the US?

Welcome!

SAS-X.com offers news and tutorials about the various SAS® software packages, contributed by bloggers. You are welcome to subscribe to e-mail updates, or add your SAS-blog to the site.

Sponsors







Dear readers, proc-x is looking for sponsors who would be willing to support the site in exchange for banner ads in the right sidebar of the site. If you are interested, please e-mail me at: tal.galili@gmail.com
SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.