I am using "Statistics Using R For Dummies" to self--teach. On one exercise:
- I installed "mass" package
.2. I installed and opened "edit" for the"mass" subfile ("anorexia'). The "Data Editor red and white spreadsheet for "anorexia" data opened up. So far, so good.
Here's where the problem begins:
The text tells me to type: anorexia$Postwt-anorexia$Prewt, but nothing happens in console except a repeat in blue of what I typed. Ditto for the t-test syntax in text associated with "anorexia" file.
Can anyone tell me what I'm doing wrong?