{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# Quiz1 - 36-226 Summer 2010 Quiz 1 July 2 1 Indicate whether...

This preview shows page 1. Sign up to view the full content.

36-226 Summer 2010 Quiz 1 July 2 1. Indicate whether the following are TRUE or FALSE. Write the entire word below each state- ment. Do not assume ANYTHING not written in the problem statement. (a) All estimators are statistics. TRUE (b) If ˆ θ is a method of moments estimator (MOME) for θ , then E [ ˆ θ ] = θ . FALSE (c) The mean is effected less by outliers than the median. FALSE (d) If X 1 , . . . , X n are identically distributed, each with density f X ( x ), then the joint density of X 1 , . . . , X n is given by f X 1 ,...,X n ( x 1 , . . . , x n ) = n Y i =1 f X ( x ) . FALSE (e) Let X 1 , . . . , X n be a random sample from a density f X ( x ). Then, E " 1 n n X i =1 ( X i - ¯ X ) 2 # = E [( X - E [ X ]) 2 ] . FALSE 2. Let X 1 , . . . , X n be iid Geometric( p ), with
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Ask a homework question - tutors are online