Question 1

Even if it will help managers interpret results,you should not convert continuous measures to categorical measures.

Accepted Answer

A) True 
 B)False

Question 2

The hypothesis that a proposed result is not true for the population is called the alternative hypothesis.

Accepted Answer

A) True 
 B)False

Question 3

The confidence interval only takes sampling error into account.

Accepted Answer

A) True 
 B)False

Question 4

Because both nominal and ordinal measures are easily used to group respondents or objects into groups or categories,researchers often refer to these types of measures as categorical measures.

Accepted Answer

A) True 
 B)False

Question 5

The population mean is hypothesized to be 200.The sample mean (x-bar)is 220.The sample size (n)is 25.The sample standard deviation (s)is 15.The median split for this sample is

Accepted Answer

A) 100. 
B) 110. 
C) 200. 
D) 220. 
E) There is not enough information to determine the median split.

Question 6

A sampling procedure is statistically more efficient than another procedure if,for a given sample size,it results in a larger sampling error.

Accepted Answer

A) True 
 B)False

Question 7

Which of the following would be an appropriate interpretation of a p-value?

Accepted Answer

A) A p-value of p < 0.0001 is 'highly significant' and therefore much more valid than a p value of 0.05. 
B) When a null hypothesis is rejected at some predetermined p level,sampling error is an unlikely explanation of the results,given that the null hypothesis is true. 
C) When a p-value shows significance,managerial and practical significance can be assumed. 
D) The probability that the research hypothesis is true is equal to 1 minus the p-value. 
E) A p-value represents the probability that the results occurred because of sampling error.

Question 8

The population mean is hypothesized to be 200.The sample mean (x-bar)is 220.The sample size (n)is 25.The sample standard deviation (s)is 15.The degrees of freedom would equal

Accepted Answer

A) 14. 
B) 24. 
C) 219. 
D) 199. 
E) Cannot tell from the given information

Question 9

For which of the following types of measures does the mean NOT provide a meaningful value?

Accepted Answer

A) Ratio 
B) Equal-interval scales 
C) Interval 
D) Ordinal 
E) Continuous measures

Question 10

A bar chart where the values of a variable are placed along the X-axis and the absolute or relative frequency along the Y-axis is called a ____ and can be developed from the ____.

Accepted Answer

A) bar graph,cumulative data 
B) frequency polygon,one-way frequency tabulation 
C) cumulative distribution graph,cumulative data 
D) histogram,uncoded data 
E) histogram,one-way frequency tabulation

Question 11

Which of the following would NOT be an example of a situation involving univariate analysis?

Accepted Answer

A) A publisher of a magazine is interested in determining what proportion of the magazine's readers is male. 
B) A restaurant would like to know the average income of its typical diner. 
C) A car dealership is particularly interested in whether or not people who own vans are more or less likely to finance auto purchases compared with people who don't own vans. 
D) A service provider needs to know her customer's average level of satisfaction with the services provided. 
E) All of these are examples for which univariate analysis could be performed.

Question 12

The population mean is hypothesized to be 200.The sample mean (x-bar)is 220.The sample size (n)is 25.The sample standard deviation (s)is 15.The estimated value of the standard error of the mean is

Accepted Answer

A) 2.6. 
B) 3.0. 
C) 1.6. 
D) 0.6. 
E) 0.9.

Question 13

Which of the following statements concerning the sample standard deviation is FALSE?

Accepted Answer

A) Sample standard deviation is a measure of the variation in responses. 
B) Analysts reporting descriptive statistics for continuous measures should always report standard deviations along with mean values. 
C) Standard deviation is meaningful and appropriate only for interval- and nominal-level measures. 
D) An analyst must be aware of the concerns of spurious precision when reporting standard deviations. 
E) Outliers can have a marked effect the calculation of a standard deviation.

Question 14

A major car manufacturer was interested in whether its midsize car was selling consistently in two markets with respect to the annual income of the car purchasers.Five-hundred new car buyers in Chicago and Miami were surveyed.In Chicago,the following pattern was observed: < $20,000 5%;$20,000-$29,999 0%;$30,000-$39,999 40%;$40,000-$49,999 30%;≥ $50,000 5%.Among those surveyed in Miami,20 earned under $20,000;70 earned between $20,000 and $30,000;265 earned between $30,000 and $40,000;125 earned between $40,000 and $50,000;and 20 earned more than $50,000.Using the data provided,the calculated value of |2 =

Accepted Answer

A) 0.883 
B) 36.30 
C) 11.95 
D) −0.542 
E) Not enough information is provided to calculate the value.

Question 15

A histogram is a bar chart that is based on information from a frequency count.

Accepted Answer

A) True 
 B)False

Question 16

When a sample mean is compared against a standard for a large sample,which statistic is calculated?

Accepted Answer

A) t 
B) p 
C) |2 
D) s 
E) z

Question 17

A sampling interval is a projection of the range within which a population parameter will lie at a given level of confidence based on a statistic obtained from an appropriately drawn sample.

Accepted Answer

A) True 
 B)False

Question 18

An observation so different in magnitude from the rest of the observations that the analyst chooses to treat it as a special case is called an outlier.

Accepted Answer

A) True 
 B)False

Question 19

The median is the most commonly calculated statistic for both interval- and ratio-level measures.

Accepted Answer

A) True 
 B)False

Question 20

It is possible to produce frequencies for

Accepted Answer

A) nominal measures only. 
B) ordinal measures only. 
C) categorical measures only. 
D) any variables in a study. 
E) None of these are correct.

Exam 17: Analysis and Interpretation: Individual Variables Independently

Even if it will help managers interpret results,you should not convert continuous measures to categorical measures.

The hypothesis that a proposed result is not true for the population is called the alternative hypothesis.

The confidence interval only takes sampling error into account.

Because both nominal and ordinal measures are easily used to group respondents or objects into groups or categories,researchers often refer to these types of measures as categorical measures.

The population mean is hypothesized to be 200.The sample mean (x-bar) is 220.The sample size (n) is 25.The sample standard deviation (s) is 15.The median split for this sample is

A sampling procedure is statistically more efficient than another procedure if,for a given sample size,it results in a larger sampling error.

Which of the following would be an appropriate interpretation of a p-value?

The population mean is hypothesized to be 200.The sample mean (x-bar) is 220.The sample size (n) is 25.The sample standard deviation (s) is 15.The degrees of freedom would equal

For which of the following types of measures does the mean NOT provide a meaningful value?

A bar chart where the values of a variable are placed along the X-axis and the absolute or relative frequency along the Y-axis is called a and can be developed from the .

Which of the following would NOT be an example of a situation involving univariate analysis?

The population mean is hypothesized to be 200.The sample mean (x-bar) is 220.The sample size (n) is 25.The sample standard deviation (s) is 15.The estimated value of the standard error of the mean is

Which of the following statements concerning the sample standard deviation is FALSE?

A histogram is a bar chart that is based on information from a frequency count.

When a sample mean is compared against a standard for a large sample,which statistic is calculated?

A sampling interval is a projection of the range within which a population parameter will lie at a given level of confidence based on a statistic obtained from an appropriately drawn sample.

An observation so different in magnitude from the rest of the observations that the analyst chooses to treat it as a special case is called an outlier.

The median is the most commonly calculated statistic for both interval- and ratio-level measures.

It is possible to produce frequencies for