Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
|
The value of the estimator approaches the value of the ____ as the sample size increases.
|
Parameter
|
|
|
The absolute difference between a parameter and its point estimator:
|
Sampling error
|
|
|
A range of values within which the population parameter is expected to occur:
|
Confidence interval
|
|
|
What are the 3 point estimates?
|
1) xbar (quantitative)
2) s 3) pbar (qualitative) |
|
|
Symbol in calculator for the point estimate of a population mean:
|
xbar
|
|
|
What happens to the t distribution as the degrees of freedom increase?
|
The t distribution approaches the standard normal distribution.
|
|
|
How do you calculate the margin of error?
|
Za/2(sigma/sqrt n)
Ta/2(sigma/sqrt n) |
|
|
What are the 3 point estimators?
|
1) mu (quantitative)
2) sigma 3) p (qualitative) |
|
|
Symbol in calculator for the point estimate of a population standard deviation:
|
Sx
|
|
|
How do you calculate an interval estimate?
|
Point estimate + Margin of Error
Point estimate - Margin of Error |
|
|
When estimating the population mean with a small sample, the t distribution may be used with ______ degrees of freedom.
|
n-1
|
|
|
A confidence interval ____ in width as the sample size is increased.
|
Decreases
|
|
|
Unknown Population Standard Deviation and a Small Sample
|
1-SampTInterval
|
|
|
The _____ is more spread out and flatter at the center than is the standard normal distribution.
|
t distribution
|
