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# General

• ### Inferential and Descriptive Statistics

Lyrics & Music © 2017 by Greg Crowther

CHORUS:

Inferential and descriptive:
different stats with different rules
Inferential and descriptive:
different goals and different tools.

What's the average height of students in this room, whom I can measure?
Here you are describing data that you've got.

What's the average height of students living in Australia?
Now you are inferring something you know not.

[REPEAT CHORUS]

When reporting variation in descriptive information,
interquartile range may be employed.
When reporting variation in inferential information,
standard error of the mean may fill the void.

[REPEAT CHORUS]

• ### Power

Lyrics © Mary McLellan may sing to the tune of the Eagles' "Hotel California"

Power is the probability

to reject the null (to reject the null)

if its false indeed

Power is the probability

to reject the null (to reject the null)

if its false indeed

• ### Hamilton on Uncertainty

Uncertainty is the prerequisite to gaining knowledge and frequently the result as well.

Edith Hamilton (1867 – 1963)

• ### Kemble on Uncertainty

… assuredly of all earthly conditions uncertainty is the most unblest …

Fanny Kemble (1809 – 1893)

• ### Etlinger on Creating Meaning

we have this opportunity to try to make meaning out of data ourselves, because frankly, data doesn't create meaning. We do.

Susan Etlinger (1962 - )