Sam Koslowsky
By: Sam Koslowsky, Senior Analytic Consultant,
Harte Hanks
Of all the analytic tools that are available to the researcher, perhaps cross tabulations are the most common. A crosstab is nothing more than a table showing the relationship between two or more variables. Where the table only shows the relationship between two categorical variables, a crosstab is also known as a contingency table. These contingency tables
By: Sam Koslowsky, Senior Analytic Consultant,
Harte Hanks
You’re finally upgrading to a top of the line smartphone. It has the features you desire, and you’re ready to pay for it. “Wait a minute,” the sales associate states. “You might want to consider an extended...
By: Sam Koslowsky, Senior Analytic Consultant,
Harte Hanks
The performance of prediction models can be judged using a variety of methods and metrics. Some years ago, I was challenged to arrive at a set of rules that would provide both the analyst and marketer guidance...
By: Sam Koslowsky, Senior Analytic Consultant,
Harte Hanks
While I have spent most of my career exploring and leveraging data science, and its associated rigorous analytics, only in the past decade or so have so many managers accepted the obvious- that data driven decision making...
By: Sam Koslowsky, Harte Hanks
Data miners employ a variety of techniques to develop robust predictive models. Often, our analysts are confronted with a dilemma. Should we construct one model to address the business objective? Or perhaps, multiple models may be in...
