Chapter 6 Flashcards
1
Q
When is a point estimator theta hat said to be an unbiased estimator?
A
If E(theta hat) = theta
2
Q
For a biased estimator what is its bias?
A
The difference E(theta hat) - theta
3
Q
What is a point estimate of a parameter theta?
A
It is a single number that can be regarded as a reasonable value of theta.
4
Q
How is a point estimate obtained?
A
It is obtained by selecting a suitable statistic and computing its value from the sample data.
