Welcome to StudyStack, where users create FlashCards and share them with others. Click on the large flashcard to flip it over. Then click the green, red, or yellow box to move the current card to that box. Below the flashcards are blue buttons for other activities that you can try to study the same information.
Test Android StudyStack App
Please help StudyStack get a grant! Vote here.
or...
Reset Password Free Sign Up

Free flashcards for serious fun studying. Create your own or use sets shared by other students and teachers.


incorrect cards (0)
correct cards (0)
remaining cards (0)
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the Correct box, the DOWN ARROW key to move the card to the Incorrect box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

Correct box contains:
Time elapsed:
Retries:
restart all cards


Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Business Stats ch 8

Basic Statistics for Business and Economics ch 8

QuestionAnswer
What are the reasons for sampling? It would be time consuming. The cost of studying all the items in a population may be prohibitive. The physical impossibility of checking all the items in the population. The destructive nature of some tests. The sample results are adequate.
What are the sampling methods? Simple Random Sample, Systematic Random Sample, Stratified Random Sample, and Cluster Sample.
Simple Random Sample A sample selected sot that each item or person in the population has the same chance of being included.
Table of Random Numbers An efficient way to select members of the sample.
Systematic Random Sample A random starting point is selected, and then every kth member of the population is selected.
Stratified Random Sample A population is divided into subgroups, called stra, and a sample is randomly selected from each stratum.
Cluster Sample A population is divided into clusters using naturally occurring geographic of other boundaries. Then, clusters are randomly selected and a sample is collected by randomly selecting from each cluster.
Sampling Error The difference between a sample statistic and its corresponding population parameter.
Sampling Distribution of the Sample Mean A probability distribution of all possible means of a given sample size.
Central Limit Theorem If all samples of a particular size are selected from any population, the sampling distribution of the sample mean is approximately a normal distribution. This approximation improves with larger samples.
Created by: dengler on 2012-02-20



bad sites Copyright ©2001-2014  StudyStack LLC   All rights reserved.