Feb 14 stats notes
Slide 1
The u is the average in the entire population, the x with the line is the average in the
sample.
An average is s/n
Slide 5
Error-> 720 is supposed to be 750
Any formula of the average can be turned into a formula for the sum, so
Chapter 18
Sampling distribution
models
The sampling distribution of a statistic is the
distribution of values taken by the statistic in all
possible samples of the same size from the sample
population.
Do you believe in polls?
Redford among least popular
Feb 3 stat notes
Pg.8 (b) means that all the fractions added together must equal 1
Pg.9 dont need to look into geometric series he just used it as an example
The square root of b^2 is IbI (the absolute value of b) because b can be either
positive or negat