leiyou

 

The correct answer is B

The probability that a parameter lies within a range of estimated values is given by 1 ? σ. The standard deviation of the distribution of the sample means is the standard error of the sample mean. The term residual is used during the discussion of regression that occurs later in this study session. The standard error of the sample means when the standard deviation of the population is known equals σ / √n, where σ = population standard deviation.

leiyou

 

The correct answer is D

Inferential statistics are used mainly to make forecasts, estimates or judgements about a large set of data based on statistical characteristics of a smaller set of data.

leiyou

 

AIM 2: Define and distinguish between estimator and parameterfficeffice" />

1、Which of the following statements regarding the terms population and sample is least accurate?

A) Observing all members of a population can be expensive or time consuming.

B) A sample includes all members of a specified group.

C) A sample's characteristics are attributed to the population as a whole.

D) A descriptive measure of a sample is called a statistic.