Question

define each of the following
(a) point estimate
(b) confidence interval
(c) level of confidence
(d) margin of error

(a) define point estimate. choose the correct answer
○ a. the expected value of a dependent variable based on the value of an independent variable
○ b. the value of a statistic that estimates the value of a parameter
○ c. the value of a parameter at a specified time
○ d. the result of one trial in an experiment

Explanation:

A point estimate is a single value used to estimate a population parameter. A statistic (like sample mean) is used to estimate a parameter (like population mean). Option A refers to regression, Option C is not the definition, Option D is about experiment trials. Option B correctly states that a point estimate is the value of a statistic that estimates a parameter.

Answer:

B. The value of a statistic that estimates the value of a parameter