Question

The purpose of a confidence interval is to provide __________________.

A) information about the range of data in a distribution
B) a measure of the confidence we can have in our sample results representing the population
C) a list of all possible values of the statistic from all possible samples
D) plausible values that a parameter could take

Answer 1

D) plausible values that a parameter could take

Explanation:

Confidence interval is estimated range of values for a population parameter could take in a given confidence level.

It can be represented as M±ME where

• M is the point of estimate

• ME is the margin of error

Confidence Intervals is measured to deal with uncertainty. For example, 95% confidence interval for a population mean is (25, 35) means that there is 95% chance that population mean is between the values 25 and 35.