Question 1

The idea that as sample size increases,the distribution of sample means of samples of size n,when randomly selected,approaches a normal distribution is known as the ____________________.

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Question 2

When you add up a set of scores and divide the result by the number of scores,you have determined the ____________________ of the distribution.

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Question 3

Explain the central-limit theorem and discuss why it is useful to marketing researchers.

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Question 4

An estimate of the population mean in the form of a single value is called a(n)____________________.

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Question 5

Name and describe the measures of central tendency.

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Question 6

The percentage of elements that meet some criterion is referred to as the ____________________.

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Question 7

The simplest measure of the dispersion of a set of scores is the ____________________.

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Question 8

Discuss the three factors required to specify sample size.

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Question 9

Measured characteristics of a specific population are called ____________________.

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Question 10

When a data set is summarized by counting the number of times each value for a variable occurs in the sample,this is known as a ____________________.

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Question 11

The middle score in the rank order of scores is called the ____________________ score.

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Question 12

The ____________________ distribution is bell shaped.

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Question 13

A frequency distribution organized into a table or graph that summarizes percentage values associated with particular values of a variable is called a(n)____________________.

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Question 14

List the characteristics of the standardized normal distribution and explain why it is a useful distribution in inferential statistics.

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Question 15

The range of numbers within which the population mean is expected to lie 95 percent of the time is known as the ____________________ estimate.

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Question 16

The standard deviation of the sampling distribution is called the ____________________ of the mean.

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Question 17

Describe the measures of dispersion and explain why standard deviation is used most often.

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Question 18

Traditionally,market researchers have used the ____________________ percent confidence level in research studies.

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Question 19

A frequency distribution of a sample is called a(n)____________________.

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Question 20

In computing a 95 percent confidence interval about a proportion for a sample size of 40,the appropriate Z-value to be used is ____________________.

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Quiz 17: Determination of Sample Size: A Review of Statistical Theory