ch 2 Audrey suggested changes

[vasishth]

• Audrey said:

Is there already a paragraph or two in the book about hypothesis testing, and the fact that these statistical tests only make sense with a priori hypotheses? I assume there will be a discussion about inference vs exploratory analyses later on but it would not harm to mention that these tests test one a priori defined hypothesis here already.

Also, I would add somewhere in this chapter an explanation of why this approach uses null hypothesis testing (i.e., the only hypothesis for which we have some information)

PS I don't understand the last sentence from Audrey.

• Add a box on a one-sided t-test.
• Relocate funnel plot to beginning of discussion on Type M and S errors.
• Explain Levy and Keller design (2.7.1) in more detail. The word adjunct was not clear to Audrey.
• When showing the formant data (Apache etc), show more than one vowel.
• Explain what degrees of freedom is
• Add a section on why aggregation is bad.