Module 10

Question 1

any statistic used to estimate a parameter (population characteristic)

Answer 1

Estimator

Question 2

If the expected value of a statistic equals the population means then that the statistic is unbiased.

Answer 2

Unbiased Estimator

Question 3

We do not have a good alignment of its expected value with its parameter

Answer 3

Biased Estimator

Question 4

what estimator should be used for the following?
when a plus four confidence interval is used to
construct a confidence interval for a population proportion what estimator should be used?

Answer 4

Biased Estimator

Question 5

what estimator should be used for the following?
sample means, sample percentages, and sample variances

Answer 5

Unbiased Estimator

Question 6

a single value estimate of a parameter

Answer 6

Point Estimate

Question 7

-also known as set estimation
-we produce a whole set of estimates to
include the true parameter with high
probability

Answer 7

Interval Estimate

Question 8

The mean of the data set falls somewhere
between 10 and 100 ( 10<μ<100).

what is the interval estimate? what is the point estimate?

Answer 8

Interval estimate - μ = 10-100
Point estimate - μ = 55

Question 9

If the population has an unknown mean, μ,
the solution is to

Answer 9

estimate population mean with sample mean