# Dawn Wright

Ph.D. in Instructional Design and Development. Teaching statistics for Excelsior College and consulting. Zoomie class of '67.

## AI and Deep learning

What is Deep Learning? This article provides some insight into the future of Deep Learning and explains the differences between it, supervised learning, and reinforcement learning. Well worth a read.

## sMAPE

How to calculate sMAPE Subtract the actual value from the absolute forcast Square the result Find the square root of the previous result (step #2) sMAPE = Square Root ( F – A)^2 In general when comparing forecast methods, the smaller the sMAPE the better. <h2>How to calculate sMAPE in r</h2> <h3>Use the Metrics Package.</h3><p>Assume …

## Why is 2-tail p-value twice the 1-tail p-value?

Why is the two-tail p-value always twice the one-tail p-value in a t-test? In the t-test output below, notice that the two-tail p-value is 0.66852 while the one-tail p-value is 0.33426. The two-tail p-value is twice the one-tail p-value. Why is this true? The two-tail p-value is defined as P > |t|.  That is, the …

## 1 Test post

Add Your Heading Text Here Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.</p> Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut elit tellus, luctus nec ullamcorper mattis, pulvinar dapibus leo.

## What is a Fireplace Worth

HomePrice Time Series Data

## Correlation: Introduction to Relationships

In the last lesson, you learned about the Two-way Chi-square Test for Independence. Using it, you can determine if two categorical variables are independent. If two variables are not independent, they are related. Knowing something about one variable can tell you something about the other variable. In this lesson, you will explore further this idea …

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