Category: Statistics and Time Series.

The use of XLStat time series analysis package with a Video Games Database example.

By Giancarlo Salazar on November 9, 2018 • ( Leave a comment )

(Disclosure: The first part of the post is a note intended to promote Xlstat as a software add-in.) I have been asked to write a post about my experience with XLStat thus […]

Who should restauranteurs trust with a manager code or swipe ID card?

By Giancarlo Salazar on December 15, 2017 • ( 1 Comment )

Who would restauranteurs trust with the manager code or swipe card when they are away? Making such decision seems natural for many businessmen and women. However, the restaurant industry possesses a singular […]

Protected: Tempering retail sales expectations on holiday season 2017.

By Giancarlo Salazar on December 6, 2017

There is no excerpt because this is a protected post.

Protected: Temperature measurement in “San Andres” Island: From t-test to Mann-Whitney U Test .

By Giancarlo Salazar on May 17, 2017

There is no excerpt because this is a protected post.

I recognized Heteroscedasticity by running this flawed regression.

By Giancarlo Salazar on June 2, 2016 • ( Leave a comment )

In a previous post, I covered how heteroscedasticity “happened” to me. The anecdote I mentioned mostly pertains to time series data. Given the purpose of the research that I was developing back […]

Here is the story of how I met heteroscedasticity.

By Giancarlo Salazar on May 26, 2016 • ( 1 Comment )

Sometimes it is good to learn about issues such as heteroscedasticity by empirically identifying them. Here is how I detected heteroscedasticity was present in time series analysis. I started working on a […]

Eight Data Sources for Research on U.S. Housing Market.

By Giancarlo Salazar on March 28, 2016 • ( 2 Comments )

The National Association of Realtors communicated today that its index of Pending Homes Sales increased 3.5 percent in February 2016. This indicator offers valuable insight for housing market analysis here in the […]