The expected value of x equals the mean of the population from which the sample

Question

The expected value of x equals the mean of the population from which the sample is drawn a. only if the sample size is 30 or greater b. only if the sample size is 50 or greater c. only if the sample size is 100 or greater d. for any sample size The standard deviation of x is referred to as the a. standard x b. standard error of the mean c. sample standard mean d. sample mean deviation The value of the____is used to estimate the value of the population parameter. a. population statistic b. sample parameter c. population estimate d. sample statistic The standard deviation of a point estimator is the a. standard error b. sample statistic c. point estimate d. sampling error The set of all elements of interest in a study is a. set notation b. a set of interest c. a sample d. a population

Explanation / Answer

(1)

Expected value of xbar equal to mean of the population from which of the sample is drawn for any sample size

because for any sample size we calculate the sample mean xbar.

here option D is correct

(2)

The standard deviation of xbar is refered as sample mean deviation

that is here option D is correct

(3) the value of the sample statistic is used to estimate the value of the population parameter

here option D is correct

(4)

the standard deviation of point estimator is the standard error

because standard deviation is used to estimate the standard error

(5) The set of all elements of interest is study is a standard error

here option a is correct.

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