Get started today!

Good to have you back!
If you've signed in to StudyBlue with Facebook in the past, please do that again.

jhanelle d.

Parameter

Is a number that describes the population.

Statistic

a number that can be computed from the sample data without making use if any unknown parameters.

Advertisement

Law of large Numbers

the larger the sample is the more accurately it is to the population mean. Draw observation at random form any population with finite mean. As the number of observations drawn increases, the mean of the observed values get closer to the men of the populations

Population distribution

of a variable is the distribution of values of the variable among all the individuals in the population

Sampling distribution

is the distribution of values taken by the statistic in all possible samples of the same size from the same population

Mean and standard deviation of a sample

The mean of a sample of and SRS of size n drawn form a large population with mean mu and standard deviation sigma. The sampling deviation of the mean has a mean mu and standard deviation of sigma/sqrt(n)

Unbiased estimator

Because the mean X bar is equal to mu. There is no systematic tendency

Central Limit theorem

when *n *is large the sampling distribution of the sample mean is approximately normal.

Sample means

means of random samples are less variable than individual observations are more normal than indivdual observations

Advertisement

"StudyBlue is great for studying. I love the study guides, flashcards and quizzes. So extremely helpful for all of my classes!"

Alice , Arizona State University"I'm a student using StudyBlue, and I can 100% say that it helps me so much. Study materials for almost every subject in school are available in StudyBlue. It is so helpful for my education!"

Tim , University of Florida"StudyBlue provides way more features than other studying apps, and thus allows me to learn very quickly! I actually feel much more comfortable taking my exams after I study with this app. It's amazing!"

Jennifer , Rutgers University"I love flashcards but carrying around physical flashcards is cumbersome and simply outdated. StudyBlue is exactly what I was looking for!"

Justin , LSU
StudyBlue is not sponsored or endorsed by any college, university, or instructor.

© 2016 StudyBlue Inc. All rights reserved.

© 2016 StudyBlue Inc. All rights reserved.