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