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Marketing Research Chapter 13
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When a researcher wants to estimate national market share based on the results of the test market for a new product in St. Louis and Kansas City, this is an example of _____.
a.descriptive statistics
b.the central limit theorem
c.inferential statistics
d.the standardized normal distribution
B: The central limit theorem
Measures computed from sample data are called _____.
a.sample statistics
b.population parameters
c.sample frequencies
d.normalized scores
A: Sample statistics
A set of data organized by summarizing the number of times a particular value of a variable occurs is referred to as a(n) _____.
a.inference table
b.frequency distribution
c.probability sample
d.sample summary
B: Frequency distribution
Hank has developed a set of data organized by summarizing the values resulting from rolling a pair of die. He constructed a table of his data and found that five was the most common result. This is an example of a _____.
a.population parameter
b.mean
c.frequency distribution
d.median
C: Frequency distribution
5. _____ is the long-run relative frequency with which an event will occur.
a.Probability
b.Central tendency
c.Estimation
d.Deviation
A: Probability
The percentage of elements that meet some criterion is called a(n) _____.
a.top-box score
b.distribution
c.proportion
d.range
C: Proportion
If 206 people in a sample of 560 people say that they "liked a product" that they purchased during a test market study in Cincinnati, the proportion of people in this study who said that they liked this product was about _____.
a.0.40
b.0.37
c.0.56
d.2.71
B: 0.37
Which of the following refers to the proportion of respondents who choose the most positive choice in a multiple choice question?
a.heteroskedasticity
b.mode
c.median
d.top-box score
D: Top-box score
Which of the following is a measure of the central tendency of a set of scores?
a.mode
b.median
c.mean
d.all of these choices
D: All of these choices
The arithmetic average of a set of numbers is referred to as the _____.
a.proportion
b.mode
c.mean
d.median
C: Mean
Find the mean score of the following set of scores: 2, 5, 7, 4, 8 .
a.4.8
b.5.2
c.7
d.26
B: 5.2
The value below which half the values in a distribution fall is the _____.
a.mean
b.median
c.mode
d.range
B: Median
Find the median of the following scores: 1, 2, 3, 4, 5, 5, 7
a.3.86
b.4
c.6
d.27
B: 4
The measure of central tendency that identifies the value that occurs most often is called the _____.
a.mean
b.median
c.mode
d.range
C: Mode
Find the mode of the following scores: 1, 2, 3, 4, 5, 5, 7
a.3.86
b.4
c.5
d.6
C: 5
Which of the following is a measure of dispersion?
a.mean
b.proportion
c.range
d.all of these choices
C: Range
If the price of a product ranges from $59 to $179, the range of these prices is _____
a.$238
b.$60
c.$120
d.$179
C: $120
If the average units produced in a month by a Ford Motor Co. plant for Ford Explorers is 22, but only 18 Explorers are produced on a given day in that same month, the deviation score for this one day is _____.
a.+4
b.-4
c.40
d.2
B: -4
Which of the following eliminates the drawback of having the measure of dispersion in squared units rather than in the original measurement units?
a.standard deviation
b.variance
c.deviation
d.mean
A: Standard deviation
Find the approximate standard deviation of the following set of scores: 3, 6, 2, 7, 8 .
a.2.24
b.2.59
c.3.32
d.6.70
B: 2.59
Which of the following is the symbol for the sample standard deviation?
a.S
b.μ2
c.σ
d.σ2
a. S
Which of the following is the symbol for the population standard deviation?
a.S
b.σ
c.μ
d.S2
B:σ
The _____ distribution is a symmetrical, bell-shaped distribution that describes the expected probability distribution of many chance occurrences.
a.bell-weather
b.common
c.normal
d.unique
C: Normal
One of the most common probability distributions in statistics is the _____ distribution.
a.normal
b.bell
c.central
d.confidence interval
A: Normal
All of the following are characteristics of the standardized normal distribution EXCEPT _____.
a.symmetrical about its mean
b.has an infinite number of cases
c.mean identifies the normal curve's highest point (the mode)
d.has a mean of 1 and a standard deviation of 0
D: Has a mean of 1 and a standard deviation of 0
If the population mean is assumed to be 20 and the sample standard deviation is 5, a score of 15 would have a Z-value of _____.
a.+1.00
b.-7.00
c.-1.00
d.+5.00
C: -1.00
A frequency distribution of the population elements is called a _____.
a.normal distribution
b.sample statistic
c.population distribution
d.standard error
C: Population distribution
A frequency distribution of a sample is called a(n) _____.
a.sample distribution
b.inferred distribution
c.secondary distribution
d.standard distribution
A: Sample distribution
Which of the following represents the standard deviation of the sampling distribution?
a.range
b.standard median
c.dispersion
d.standard error of the mean
D: Standard error of the mean
Which theory states that as sample size increases, the distribution of sample means of size n, randomly selected, approaches a normal distribution?
a.prospect theory
b.central-limit theorem
c.dispersion theory
d.entropy
B: Central-limit theorem
An estimate of the population mean in the form of a single value, usually the sample mean, is called a _____.
a.confidence interval estimate
b.standard deviation
c.point estimate
d.variant
C: Point estimate
If the sample standard deviation is 10.5 and the sample mean is 48 based on a study with a sample size of 120, the 95 percent confidence interval about the mean is between approximately _____.
a.44.37 and 51.63
b.46.12 and 49.88
c.47.88 and 48.12
d.40.0 and 50.0
B: 46.12-49.88
In statistical terms, ______ the sample size ______ the width of the confidence interval about the mean at a given confidence level.
a.increasing; decreases
b.increasing; increases
c.decreasing; decreases
d.none of these choices
A: increasing; decreases
Which of the following is a step in determining sample size?
a.estimate the standard deviation of the population
b.make a judgment about the allowable magnitude of error
c.determine a confidence level
d.all of these choices
D: All of these choices
The formula below is used to calculate the ______ .
(ZS/E)2
a.sample standard deviation
b.population standard deviation
c.sample size
d.sample variance
C: Sample Size
The confidence interval for a proportion uses which of the following formulas?
a.p ±ZSp
b.Sp ±ZP
c. ±ZSs
d.none of these choices
A: p ±ZSp
If 35 percent of TV viewers recalled seeing an ad for a Toyota Prius on a particular television program based on a sample of 800 viewers, the 95 percent confidence interval for this study would be between approximately _____.
a.
30 percent and 40 percent
b.
32 percent and 38 percent
c.
28 percent and 42 percent
d.
20 percent and 30 percent
B: 32 percent and 38 percent
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