Statistics II Flashcards
(11 cards)
σ(x-bar) = ?
σ / square root of n
How are N, n, and n subscript x related to each other?
All of them are not equal to each other at all
How are μ, x-bar, and x-bar with subscript x related to each other?
They are all approximately equal to each other
How are σ, s, and σ with subscript x related to each other?
σ is approximately s
s is not equal to σ subscript x at all
What does SE x-bar represent?
Standard Error
What is the formula for standard error for means?
s / square root of n
How do you find the confidence interval using standard error?
bar-x + or - (confidence level)(s / square root n)
σ subscript ^p = ?
Square root of the entirety
p(1-p) / n
SE subscript ^p
Square root of entirety
^p(1-^p) / n
What is n with a subscript of x?
The entire sample of x
What is the margin of error for proportions?
z* square root ^p(1 - ^p) / n
