# Monthly Archives: March 2015

# How I write Scientific Blog Posts That Contains Codes and Mathematical Expressions – a Quick Reference – with WordPress, Gist and Mathjax

# Udacity – Inferential Statistics Hypothesis Testing – One-tail or Two-tails?

# Udacity – Inferential Statistics – Hypothesis Testing – Dependent T Test for Paired Samples – The Keyboard Example

# Udacity – Inferential Statistics – Hypothesis Testing – Decision Errors

# Udacity – Inferential Statistics – The Hypothesis Testing Song

Have just finished the Udacity Inferential Statistics Hypothesis Testing class taught by Katie Kormanik, who has wrapped up the lesson with an awesome Hypothesis Testing Song.

(Or alternatively, this Udacity Link)

Couldn’t helped myself, I replayed the song a few time and wrote down the lyrics! (And… sang along :)

Here we go.

Hypothesis Testing

By Katie Kormanik

(This goes out to all my students from around the world…)

So you got

Some sample means

X bar is five

n is size seventeenIs it typical

Whatcha gotta know?

For the Sampling Distribution

is the way to go.You got the Samp-ling Dis-tri-bu-tion.

Oh na na na

So you got

Some populationMu is one

Sigma two

You’d need the derivation

for the Standard Deviationneed motivation

it’s as simple as Pi.

Sigma divided by square root n

Why?Cos it’s the Central…

Limit theorem…Now find your Z

Substract the mean

and divide by S.E.

What’s the probabilityIt’s not alot

Less than Alpha level you

REJECT H.0.!