# STAT 503 Quiz II

### Card Set Information

 Author: MRK ID: 262385 Filename: STAT 503 Quiz II Updated: 2014-02-19 16:18:56 Tags: Stats Folders: Description: Independence, choose, excatly Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user MRK on FreezingBlue Flashcards. What would you like to do?

1. Value in z-table
area under the curve to the left
2. Random Variables: mean
• Die:
• 1(1/6) + 2(1/6) … 6(1/6) = 3.4
3. Random Variables: Variance
• Die:
• (1-3.4)2/6 + (2-3.4)2/6 … + (6-3.4)2/6 = 2.916
4. Binomial
• "exactly 'y' successes in 'n' trials"
• Pr(Y=y) (n choose y)*py(1-p)n-y
5. Z-value calculation
Z = (Y-mean)/ SD
6. normal
7. outliers in both directions
• Skewed left
• outliers left (more bigger)
• Skewed right
• outliers right (more smaller)
• Sample probability
• Y/n
• Pr(Y/n = p*) = Pr(Y= np*)
• linear transformation of Y
8. if n increases
• less standard deviation and will reflect reality
• decreases by a factor of n/√n

What would you like to do?

Home > Flashcards > Print Preview