bcaffo / littleinferencebook

A book for the coursera statistical inference class

LittleInferenceBook

A book for the coursera statistical inference class

The book can be compiled by cloning this repository and kniting LittleInferenceBook.Rmd.

The Little Statistical Inference Book by Brian Caffo is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

littleinferencebook's Issues

Conditional Probability Section: Simple Typo

"(Could we convict all lottery winners of fixing the lotter since the chance that they would win is so small.)"

Should be lottery, not lotter.

possible error p. 44 bottom of page

First just want to say it is an excellent book and a great resource for students in the Statistical Inference course.

Text says "n choose 1" equals 1 but isn't it equal to n?
Same for "n choose n-1."

Why use {$$} and {/$$} instead of $$?

Hello Brian,

Maybe I'm missing something but the usage of {$$} and {/$$} around some text makes the latex compiler crash. Why not simply use $? (for example $X$).

Cheers,
Taurus

"Die" rolling :)

Chapter 07, I'd rather not "die" rolling ^_^

Also a bit later:

It's pretty remarkable that the approximation works so well with so few rolls of the die. So, if you're stranded on an island, and need to simulate a standard normal without a computer, but you do have a die, you can get a pretty good approximation with 10 rolls even.

Please tell me that wasn't your intention! :D

Invalid r code for t groups. Minor correction needed.

Under the heading Mistakenly treating the sleep data as grouped the R code uses the value of x_1 and x_2 - these should be g_1 and g_2 respectively. Thus the code should read:

n1 <- length(g1); n2 <- length(g2)
sp <- sqrt( ((n1 - 1) * sd(g1)^2 + (n2-1) * sd(g2)^2) / (n1 + n2-2))
md <- mean(g2) - mean(g1)
semd <- sp * sqrt(1 / n1 + 1/n2)
rbind(
  md + c(-1, 1) * qt(.975, n1 + n2 - 2) * semd,  
  t.test(g2, g1, paired = FALSE, var.equal = TRUE)$conf,
  t.test(g2, g1, paired = TRUE)$conf
)

Missing link in 02-Probability

02_probability.md, "Where to get a more thorough treatment of probability", text says

For a more complete treatment see the class Mathematical Biostatistics Boot Camp 1, which can be viewed on YouTube here

There is no YouTube link

possible typo on p. 47...

BMI should be in units of kg/m^2 not kg/mg.

Solutions for the questions?

Hi everyone. I was wondering if anyone has the solutions to the questions, and by solutions I mean for all the questions (I understand that some of them are given). Would love to have them as a reference. Thanks and regards.