Exam 2- i Flashcards
1
Q
What is statistical inferences
A
allow us to estimate population characteristics from sample data
2
Q
what is probability
A
the likelihood that any one event will occur, given all the possible outcomes (sample space)
3
Q
how is probability expressed
A
ration or decimal ( mostly decimal )
4
Q
Look at slide
A
3
5
Q
what time period should you be looking at probability at
A
the long run not looking at the short run as it will not show you the right out comes ( think of the coin)
6
Q
what is the standard error of the mean
A
variability (standard deviation) of theoretical sampling of means
7
Q
what is the equation of the standard error of the mean
A
Sx= s/ sqaur root of n
8
Q
stopped at
A
slide 9
