What sort of help you need?, the explanation to the terms you provided is correct but you need to look for proper definitions at net...
Which of the following definitions is incorrect?
Estimation
It is a process by which sample data is used to estimate or approximate the value of an unknown population parameter.
The estimate can be expressed as a single value, known as a point estimate, or a range of values, known as an interval estimate.
Point Estimation
It is a process by which sample data is used to estimate or approximate the value of an unknown population parameter using a single value or a point.
Interval Estimation
It is a process by which sample data is used to estimate or approximate the value of an unknown population parameter using an interval.
Estimator
It is a rule, often expressed as a formula, that tell us how to calculate the value of an estimate based on sampled data.
e.g X bar
Point Estimator
Suppose we use an estimator to do point estimation, the estimator is said to be a point estimator of the population parameter.
e.g Suppose we use X bar to do point estimation, X bar is said to be a point estimator of the population parameter(mu).
Interval Estimator
Suppose we use an estimator to do interval estimation, the estimator is said to be an interval estimator of the population parameter.
e.g Suppose we use X bar to do interval estimation, X bar is said to be an interval estimator of the population parameter(mu).
What sort of help you need?, the explanation to the terms you provided is correct but you need to look for proper definitions at net...
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katlego (01-20-2014)
The answer "correct" is sufficient for now if by correct you meant that you manged to see the relationship between the terms and most importantly not confuse them. For now I only want definitions that can give an intuitive idea about each term.
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