Question 1

Define systematic random sampling approach.

Accepted Answer

The answer of Define systematic random sampling approach....

Question 2

SELECT ALL THAT APPLY.
-Probability

Accepted Answer

A) can be expressed as a proportion. 
B) can be expressed as a percentage. 
C) can take a maximum value of 1. 
D) can take a minimum value of 1.

Question 3

If the mean and standard deviation of a population are 436 and 103 respectively,then for a sample with a mean of 389 and a standard deviation of 96,the sampling error is 7.

Accepted Answer

A) True 
 B)False

Question 4

A method of sampling that enables researchers to specify for each case in the population the probability of its inclusion in the sample is referred to as ______ sampling.

Accepted Answer

A) inclusionary 
B) case 
C) probability 
D) density

Question 5

The Law School Admission Test (LSAT)is designed so that test scores are normally distributed.The mean LSAT score for the population of all test-takers in 2005 was 154.35 with a standard deviation of 5.62.If you drew all possible random samples of size 100 from the population of LSAT test-takers and plotted the values of the mean from each sample,the resulting distribution would be the sampling distribution of the mean.What is the value of the mean of the sampling distribution?

Accepted Answer

The answer of The Law School Admission Test (LSAT)is designed...

Question 6

Parameter is a measure used to describe the sample distribution.

Accepted Answer

A) True 
 B)False

Question 7

In a simple random sample

Accepted Answer

A) every member of the population has an equal chance of being selected. 
B) the population is approximately normal with the mean,median,and mode being approximately equal. 
C) the mean is equal to the mode. 
D) the mean of N is always equal to the standard deviation.

Question 8

Consider the following population of 10 students with their corresponding test scores.
  
Randomly draw 20 possible samples of size N = 4,and compute the mean scores for each sample.Also obtain the mean of the sampling distribution.

Accepted Answer

The answer of Consider the following population of 10 students...

Question 9

If all possible random samples of size N are drawn from a population with a mean of μY and a standard deviation of óᵧ,then as N becomes larger,the sampling distribution of sample means becomes approximately normal with a mean of and a standard deviation of ó?.This statement is known as the

Accepted Answer

A) sampling frame. 
B) sampling distribution. 
C) central sampling theorem. 
D) central limit theorem.

Question 10

Which of the following is the notation for the sample mean?

Accepted Answer

A) p 
B) ȳ 
C) π 
D) S2Y

Question 11

If the mean and standard deviation of a population are 436 and 103 respectively,what is the standard error of the mean for a sample of size 8?

Accepted Answer

The answer of If the mean and standard deviation of...

Question 12

The Law School Admission Test (LSAT)is designed so that test scores are normally distributed.The mean LSAT score for the population of all test-takers in 2005 was 154.35 with a standard deviation of 5.62.From Data Set 1,if you drew all possible random samples of size 100 from the population of LSAT test-takers and plotted the values of the mean from each sample,the resulting distribution would be the sampling distribution of the mean.Would this sampling distribution be a normal distribution?

Accepted Answer

The answer of The Law School Admission Test (LSAT)is designed...

Question 13

What is the difference between a parameter and a statistic?

Accepted Answer

The answer of What is the difference between a parameter...

Question 14

Consider the following population of 10 students with their corresponding test scores.
  
Randomly draw 20 possible samples of size N = 4,and compute the mean scores for each sample.

Accepted Answer

The answer of Consider the following population of 10 students...

Question 15

Disproportionate stratified sampling is especially useful when the size of some of the subgroups in the population is relatively equal.

Accepted Answer

A) True 
 B)False

Question 16

How is probability sampling useful?

Accepted Answer

The answer of How is probability sampling useful?...

Question 17

Explain the central limit theorem.

Accepted Answer

The answer of Explain the central limit theorem....

Question 18

The Law School Admission Test (LSAT)is designed so that test scores are normally distributed.The mean LSAT score for the population of all test-takers in 2005 was 154.35 with a standard deviation of 5.62.If the LSAT scores were not normally distributed,would the sampling distribution of the mean be a normal distribution if the sample size was 100?

Accepted Answer

The answer of The Law School Admission Test (LSAT)is designed...

Question 19

In a population of 100 scores,if 20 was our sample size,then using systematic random sample,the value of K is 5.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following sampling approaches first divides the population into subgroups based on one or more variables of interest?

Accepted Answer

A) Simple statistical sampling 
B) Systematic random sampling 
C) Stratified random sampling 
D) Systematic density sampling

Exam 6: Sampling and Sampling Distributions

Define systematic random sampling approach.

SELECT ALL THAT APPLY. -Probability

If the mean and standard deviation of a population are 436 and 103 respectively,then for a sample with a mean of 389 and a standard deviation of 96,the sampling error is 7.

A method of sampling that enables researchers to specify for each case in the population the probability of its inclusion in the sample is referred to as ______ sampling.

Parameter is a measure used to describe the sample distribution.

In a simple random sample

Consider the following population of 10 students with their corresponding test scores. Randomly draw 20 possible samples of size N = 4,and compute the mean scores for each sample.Also obtain the mean of the sampling distribution.

If all possible random samples of size N are drawn from a population with a mean of μY and a standard deviation of óᵧ,then as N becomes larger,the sampling distribution of sample means becomes approximately normal with a mean of and a standard deviation of ó?.This statement is known as the

Which of the following is the notation for the sample mean?

If the mean and standard deviation of a population are 436 and 103 respectively,what is the standard error of the mean for a sample of size 8?

What is the difference between a parameter and a statistic?

Consider the following population of 10 students with their corresponding test scores. Randomly draw 20 possible samples of size N = 4,and compute the mean scores for each sample.

Disproportionate stratified sampling is especially useful when the size of some of the subgroups in the population is relatively equal.

How is probability sampling useful?

Explain the central limit theorem.

In a population of 100 scores,if 20 was our sample size,then using systematic random sample,the value of K is 5.

Which of the following sampling approaches first divides the population into subgroups based on one or more variables of interest?