English

Rick Wicklin 0
Add a diagonal line to a scatter plot

In my statistical analysis of coupons article, I presented a scatter plot that includes the identity line, y=x. This post describes how to write a general program that uses the SGPLOT procedure in SAS 9.2. By a "general program," I mean that the program produces the result based on the

Analytics
Kristine Vick 0
How to make an impact with analytics

Contributed by Bob Messier, Senior Director of Business Analytics, SAS Last week I participated in the SAS Power Series event in Minneapolis. It included about 23-30 folks representing a broad range of industries. Analytics was the central topic of the event. What is analytics? How do you get your organization

Rick Wicklin 0
The area under a density estimate curve

Readers' comments indicate that my previous blog article about computing the area under an ROC curve was helpful. Great! There is another common application of numerical integration: finding the area under a density estimation curve. This article provides an overview of density estimation and computes an empirical cumulative density function.

Analytics
Alison Bolen 0
A future with analytic music

Contributed by Thornton May, IT Futurist On June 15, 2011 twenty plus analytic pioneers from twelve different vertical markets convened to explore the current state and future trajectory of enterprise analytics. Each participant in The SAS Power Series event brought with them intellect, energy, curiosity and a challenge. During the

Rick Wicklin 0
Overlaying two histograms in SAS

A reader commented to me that he wants to use the HISTOGRAM statement of the SGPLOT procedure to overlay two histograms on a single plot. He could do it, but unfortunately SAS was choosing a large bin width for one of the variables and a small bin width for the

Rick Wicklin 0
Pre-allocate arrays to improve efficiency

Recently Charlie Huang showed how to use the SAS/IML language to compute an exponentially weighted moving average of some financial data. In the commentary to his analysis, he said: I found that if a matrix or a vector is declared with specified size before the computation step, the program’s efficiency

Rick Wicklin 0
A statistical analysis of coupons

Each Sunday, my local paper has a starburst image on the front page that proclaims "Up to $169 in Coupons!" (The value changes from week to week.) One day I looked at the image and thought, "Does the paper hire someone to count the coupons? Is this claim a good

Analytics
0
What kind of information would you like?

Organizations have become good at finding answers to questions. Where they need to improve is in asking the right questions, according to Dries Van Nieuwenhuyse, General Manager Performance Management USG People Interservices NV. “IT people tend to be applied scientists whose job is to answer specific questions but in analytics,

1 289 290 291 292 293 329