# Dawn Wright

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

## Bomber Mafia

Summer Reading The Bomber Mafia by Malcolm Gladwell One of the first names I had to memorize as part of my Doolie Knowledge at the Air Force Academy was that of Curtis E. LeMay, the then Air Force Chief of Staff but better known for his WWII exploits and later “father” of the Strategic Air …

## What is 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.

## 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

## 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 …

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