Exam 6: Sampling and Sampling Distributions

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 construct the sampling distribution of the sample means.

What is sampling error?

Parameters are associated with ______;whereas,statistics are associated with ______.

Which of the following two qualities are used to calculate the standard error of the mean?

A small population of N = 12 has values of 2,2,3,4,4,7,8,8,8,9,12,12.Take ten samples of size 3 and calculate the mean for each.Then calculate the mean of these ten sample means.Is the mean of these sample means a good approximation of the population mean? Why or why not.

Why is sampling distribution a theoretical distribution?

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.Calculate the value of the standard error of the mean for the sampling distribution for 100 samples.

Which of the following is NOT a statistic?

______ is necessary because researchers in the social sciences almost never have enough resources to collect information about the entire set of subjects of interest to them.

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

SELECT ALL THAT APPLY. -In a simple random sample

Provide the appropriate symbols for the following parameters: mean,proportion,standard deviation,and variance.

A relatively small subset from a group that includes all of the cases that a researcher is interested is referred to as a

Which of the following is NOT a parameter?

A group that includes all the cases in which a researcher is interested is referred to as a

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,provide evidence that the standard error of the mean decreases as sample size increases.

A small population of N = 12 has values of 2,2,3,4,4,7,8,8,8,9,12,12.Calculate the mean and standard deviation for this population.

The sampling distribution is less skewed.It resembles a normal distribution.

When the size of the sample selected from a subgroup is proportional to the size of the that subgroup in the entire population,we refer to this as

Consider the following population of 10 students with their corresponding test scores. Draw a random sample of five students and find the sampling error.