Class Notes
(808,041)

Canada
(493,027)

University of Toronto Scarborough
(30,797)

Statistics
(266)

STAB22H3
(208)

Michael Krashinsky
(17)

Lecture 20

# Lecture 20 Pre.pdf

Unlock Document

University of Toronto Scarborough

Statistics

STAB22H3

Michael Krashinsky

Fall

Description

Pre-Lecture Twenty
▯ Many times we are interested in a random variable.
▯ The best that we can hope to understand about a random variable is its
probability distribution.
▯ Usually the probability distribution of a random variable is unknown to us
and we use data to make educated guesses about it.
{ Sometimes we settle for making educated guesses about the mean of the
probability distribution of the random variable.
{ Other times we assume that the probability distribution is normal and
make educated guesses about the mean of the normal distribution.
▯ Either way, many times scientists and/or statisticians are preoccupied with
making educated guesses about the mean of a probability distribution.
▯ The educated guesses typically fall into one of two categories:
{ Estimation and
{ Hypothesis test

More
Less
Related notes for STAB22H3