Statistical Word of the Week
Week #5 - Differencing of a Time Series
This procedure may be applied consecutively more than once, giving rise to the "first differences", "second differences", etc.
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"Our company is coming to the end of our first year working with statistics.com as its primary provider of statistical training and I wanted to thank you for the excellent classes and overall service that you have provided. The classes have been consistently on target and provided a foundation that have allowed my team to take their new skills and immediately implement them in research efforts. My research team is significantly more skilled and efficient than they were at the beginning of the year. They have used their training to complete predictive models, a segmentation of the consumer market and a conjoint evaluation.
It took me a long time to find a program that provided the right mix of applied and theory, but I have finally found the right one. My staff emerges from your training ready to make an impact on the company.
As you know, we are now getting ready to send a second wave of researchers through your training.
I also have to note that your administrative staff makes the process of registering and tracking our classes seamless. I wish all training efforts could run this smoothly.