Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know (0)
Remaining cards (0)
Know (0)
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 12

Basic Statistics for Business and Economics ch 12

Analysis of Variance (ANOVA) The simultaneous comparison of several population means.
What are the characteristics of the F distribution? There is a family. It is continuous. It cannot be negative. It is positively skewed. It is asymptotic.
The F distribution is used to test: The hypothesis that the variance of one normal population equals the variance of another normal population.
To use the ANOVA, we assume the following: The populations follow the normal distribution. The populations have equal standard deviation (sigma). The populations are independent.
Total Variation The sum of the squared differences between each observation and the overall mean.
Treatment Variation The sum of the squared differences between each treatment mean and the grand or overall mean.
Random Variation The sum of the squared differences between each observation and its treatment mean.
SS Total (Sum of Squares Total) = SST + SSE
SST Sum of Squares Treatment
SSE Sum of Squares Error
MSE (Mean Square Error) = SSE/(n-k)
MST (Mean Square Treatment) = SST/(k-1)
Degrees of freedom in the numerator = k - 1
Degrees of freedom in the denominator = n - k
k = Number of Treatments
n = Number of Observations
Created by: dengler



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards