Question 1

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate.
-Salaries of college professors

Accepted Answer

A)  Nominal
B)  Ratio
C)  Ordinal
D)  IntervalE) A) and D)
F) A) and C) B

Question 2

Fill in the blank. Explain your reasoning.
-Doctor Murphy's salary is currently 9% more than Doctor Carell's salary, so Professor Murphy's salary is ____%of Professor Carell's salary.

Accepted Answer

A)  -9%; Doctor Murphy's salary is -9% of Professor Carell's salary.
B)  109%; Doctor Murphy's salary is 100% of Professor Carell's salary plus another 9%.
C)  91%; Doctor Murphy's salary is 100% of Professor Carell's salary minus 9% of Professor Carell's salary.
D)  9%; Doctor Murphy's salary is 9% of Professor Carell's salary.E) B) and D)
F) B) and C) B

Question 3

Two statements are given. Identify the statement for which a ratio of the measurements is meaningful. State "Neither" or "Both" if appropriate.
-1 - At The Gap, Buffy has a credit card balance of $556, and Rosa has a credit line of $111.
2 - Juan saved $435 last month, and Ian saved $321 last month.

Accepted Answer

A)  At The Gap, Buffy has a credit card balance of $556, and Rosa has a credit line of $111.
B)  Juan saved $435 last month, and Ian saved $321 last month.
C)  Neither
D)  BothE) B) and D)
F) None of the above

Question 4

Solve the problem.
-Identify the four price index numbers in the table that would result from using the price from 1995 as the reference value. Round each value to the nearest tenth. 
  \quad    \quad    \quad    \quad    \quad  Average Gasoline Prices (per gallon) 
  Year  Price  Price as a  Percentage of 1975 Price  Price Index (1975=100)  Price Index (1995=100) 195529.1451.3%51.3197556.7%100.0%100.01995120.5%212.5%212.52005231.04407.4%407.4\begin{array}{|l|l|l|l|l|}\hline \text { Year } & \text { Price } & \begin{array}{l}\text { Price as a } \\text { Percentage of } \1975 \text { Price }\end{array} & \begin{array}{l}\text { Price Index } \(1975=100) \end{array} & \begin{array}{l}\text { Price Index } \(1995=100) \end{array} \\hline 1955 & 29.14 & 51.3 \% & 51.3 & \\hline 1975 & 56.7 \% & 100.0 \% & 100.0 & \\hline 1995 & 120.5 \% & 212.5 \% & 212.5 & \\hline 2005 & 231.04 & 407.4 \% & 407.4 & \\hline\end{array} Year 1955197519952005​ Price 29.1456.7%120.5%231.04​ Price as a  Percentage of 1975 Price ​51.3%100.0%212.5%407.4%​ Price Index (1975=100) ​51.3100.0212.5407.4​ Price Index (1995=100) ​​​

Accepted Answer

A)   1955: 191.7, 1975: 100, 1995: 47.1 ,2005:  24.124.124.1 
B)    1955:191,1975:100,1995:47.8,2005:24.11955 : 191,1975 : 100,1995 : 47.8,2005 : 24.11955:191,1975:100,1995:47.8,2005:24.1 
C)    1955:24.1,1975:47.8,1995:100,2005:1911955 : 24.1,1975 : 47.8,1995 : 100,2005 : 1911955:24.1,1975:47.8,1995:100,2005:191 
D)    1955:24.1,1975:47.1,1995:100,2005:191.71955 : 24.1,1975 : 47.1,1995 : 100,2005 : 191.71955:24.1,1975:47.1,1995:100,2005:191.7E) B) and D)
F) C) and D)

Question 5

A poll was taken of a random sample of 1189 college students. Of these students, 789 reported that they had a Drinking binge (more than 10 drinks in an evening) in the past month. Select the most believable conclusion.

Accepted Answer

A)  About 70% of college students indulge in binge drinking.
B)  Of the 23,456,321 college students in the country, 15,565,212 indulged in binge drinking last month.
C)  About 66.358% of college students indulged in binge drinking last month.
D)  About 70% of college students indulged in binge drinking last month.E) None of the above
F) All of the above

Question 6

Solve the problem.
-A study was conducted to determine whether flipping a penny or spinning a penny has an effect on the Proportion of heads. Among 56,126 trials, 25,586 involved flipping pennies, and 12,630 of those pennies turned Up heads. The other 30,540 trials involved spinning pennies, and 12,815 of those pennies turned up heads. 
(i)  What percentage of the trials involved flipping pennies?
(ii)  What percentage of the trials involved spinning pennies?
(iii)  Among the pennies that were flipped, what is the percentage that turned up heads?
(iv)  Among the pennies that were spun, what is the percentage that turned up heads?
Round your answers to the nearest percent.

Accepted Answer

A)   (i)   46%46 \%46% ; (ii)   54%54 \%54% ; (iii)   170%170 \%170% ; (iv)   142%142 \%142% 
B)   (i)   54%54 \%54% ; (ii)   46%46 \%46% ; (iii)   49%49 \%49% ; (iv)   42%42 \%42% 
C)   (i)   46%46 \%46% ;(ii)   54%54 \%54% ;(iii)   49%49 \%49% ; ((iv)   42%42 \%42% 
D)   (i)   46%46 \%46% ;(ii)   54%54 \%54% ;(iii)   50%50 \%50% ; (iv)   41%41 \%41%E) C) and D)
F) A) and C)

Question 7

Of the 2542 students enrolled at a midwestern college, 156 were polled. Forty-two reported that they would
Definitely buy books at the college bookstore. The bookstore should prepare for

Accepted Answer

A)  700 students.
B)  684 students.
C)  about 600 students.
D)  at least 700 students.E) B) and D)
F) A) and B)

Question 8

Identify the following variable as either qualitative or quantitative and explain why.
-Outcome of tossing a coin

Accepted Answer

A)  Qualitative because it is not a measurement or a count
B)  Quantitative because it consists of a countC) A) and B)
D) undefined

Question 9

Identify the following variable as either qualitative or quantitative and explain why.
-A person's sex

Accepted Answer

A)  Qualitative because it is not a measurement or a count
B)  Quantitative because it consists of a measurementC) A) and B)
D) undefined

Question 10

A newspaper reported "23,543,114 preteens have read one or more of the Harry Potter books." This figure is

Accepted Answer

A)  imprecise.
B)  suspect.
C)  believable.
D)  not believable.E) B) and C)
F) None of the above

Question 11

Solve the problem.
-Part of the Housing Price Index for 1999 is given below:   City  Palo Alto, CA  Sioux City, IA  Boston, MA  Spokane, WA  Index 3654718278\begin{array} { l | c | c | c | c } 	ext { City } & 	ext { Palo Alto, CA } & 	ext { Sioux City, IA } & 	ext { Boston, MA } & 	ext { Spokane, WA } \\hline 	ext { Index } & 365 & 47 & 182 & 78\end{array} City  Index ​ Palo Alto, CA 365​ Sioux City, IA 47​ Boston, MA 182​ Spokane, WA 78​​  An academic computer expert is leaving Boston to work in the high tech area of Palo Alto. What should she expect to
Pay, to the nearest dollar, for a house comparable to her $310,000 Boston home?

Accepted Answer

A)  $621,703
B)  $492,000
C)  $154,575
D)  $675,000 E) A) and B)
F) A) and C)

Question 12

Fill in the blank. Explain your reasoning.
-If an elephant weighs 10% more than a rhino, then the elephant's weight is ____% of the rhino's weight.

Accepted Answer

A)  10%; The elephant weighs 10% of the rhino's weight.
B)  110%; The elephant weighs 100% of the rhino's weight plus another 10%.
C)  90%; The elephant weighs 100% of the rhino's weight minus 10% of the rhino's weight.
D)  -10%; The elephant weighs -10% of the rhino's weight.E) All of the above
F) A) and C)

Question 13

Answer the question.
-A pharmacist puts 32 pills into a prescription order that calls for 30 pills. What is the absolute error?

Accepted Answer

A)  2 pills
B)  -6.7%
C)  6.7%
D)  -2 pillsE) A) and C)
F) A) and B)

Question 14

Provide an appropriate response.
-A computer uses voice recognition software. Identify the potential error as random or systematic.

Accepted Answer

A)  Random
B)  SystematicC) A) and B)
D) undefined

Question 15

Solve the problem.
-Boys spend an average of $6100 on back-to-school clothes. Girls spend an average of $26,700. How much less is the boy's average expenditure, relatively, than the girl's expenditure (round to the nearest percent) ?

Accepted Answer

A)  -77%
B)  -338%
C)  77%
D)  338%E) A) and B)
F) All of the above

Question 16

Provide an appropriate response.
-The approximate value of  π\piπ  is 3.1415927. Which of the following experimentally determined values is the most
Accurate?

Accepted Answer

A)  3.14
B)  3.412114
C)  3.247
D)  3.3245 E) None of the above
F) A) and D) A

Question 17

Compared with a digital scale that gives readings as - - . - - g a scale that gives readings as- - , - - - g is

Accepted Answer

A)  not necessarily more precise or more accurate.
B)  more precise and more accurate.
C)  more precise, but not necessarily more accurate.
D)  more accurate, but not necessarily more precise.E) A) and B)
F) A) and C)

Question 18

Two statements are given. Identify the statement for which a ratio of the measurements is meaningful. State "Neither" or "Both" if appropriate.
-1 - Kasheta ran the race in 22.3 sec, and Louisa ran the same race in 26.4 sec.
2 - Juan gets out of school at 2:45 PM, and Aito gets out of school at 3:15 PM.

Accepted Answer

A)  Juan gets out of school at 2:45 PM, and Aito gets out of school at 3:15 PM.
B)  Kasheta ran the race in 22.3 sec, and Louisa ran the same race in 26.4 sec.
C)  Neither
D)  BothE) A) and D)
F) None of the above

Question 19

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate.
-The sample of spheres categorized from softest to hardest

Accepted Answer

A)  Nominal
B)  Ratio
C)  Interval
D)  OrdinalE) A) and B)
F) All of the above

Question 20

A student in a statistics class chooses to determine the number of hours the average student studies for a statistics test. Discuss the accuracy and precision that would be expected in the summary report.

Accepted Answer

The researcher might well expect a syste...

Exam 2: Measurement in Statistics

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. -Salaries of college professors

Correct Answer
verified
B

Fill in the blank. Explain your reasoning. -Doctor Murphy's salary is currently 9% more than Doctor Carell's salary, so Professor Murphy's salary is ____%of Professor Carell's salary.

Correct Answer
verified
B

Two statements are given. Identify the statement for which a ratio of the measurements is meaningful. State "Neither" or "Both" if appropriate. -1 - At The Gap, Buffy has a credit card balance of $556, and Rosa has a credit line of $111. 2 - Juan saved $435 last month, and Ian saved $321 last month.

Correct Answer
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Correct Answer
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A poll was taken of a random sample of 1189 college students. Of these students, 789 reported that they had a Drinking binge (more than 10 drinks in an evening) in the past month. Select the most believable conclusion.

Correct Answer
verified

Correct Answer
verified

Of the 2542 students enrolled at a midwestern college, 156 were polled. Forty-two reported that they would Definitely buy books at the college bookstore. The bookstore should prepare for

Correct Answer
verified

Identify the following variable as either qualitative or quantitative and explain why. -Outcome of tossing a coin

Correct Answer
verified

Identify the following variable as either qualitative or quantitative and explain why. -A person's sex

Correct Answer
verified

A newspaper reported "23,543,114 preteens have read one or more of the Harry Potter books." This figure is

Correct Answer
verified

Correct Answer
verified

Fill in the blank. Explain your reasoning. -If an elephant weighs 10% more than a rhino, then the elephant's weight is ____% of the rhino's weight.

Correct Answer
verified

Answer the question. -A pharmacist puts 32 pills into a prescription order that calls for 30 pills. What is the absolute error?

Correct Answer
verified

Provide an appropriate response. -A computer uses voice recognition software. Identify the potential error as random or systematic.

Correct Answer
verified

Solve the problem. -Boys spend an average of $6100 on back-to-school clothes. Girls spend an average of $26,700. How much less is the boy's average expenditure, relatively, than the girl's expenditure (round to the nearest percent) ?

Correct Answer
verified

Provide an appropriate response. -The approximate value of $\pi$ is 3.1415927. Which of the following experimentally determined values is the most Accurate?

Correct Answer
verified
A

Compared with a digital scale that gives readings as - - . - - g a scale that gives readings as- - , - - - g is

Correct Answer
verified

Correct Answer
verified

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. -The sample of spheres categorized from softest to hardest

Correct Answer
verified

A student in a statistics class chooses to determine the number of hours the average student studies for a statistics test. Discuss the accuracy and precision that would be expected in the summary report.

Correct Answer
verified
The researcher might well expect a syste...
View Answer

Exam 2: Measurement in Statistics

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. -Salaries of college professors

Correct AnswerverifiedB

Fill in the blank. Explain your reasoning. -Doctor Murphy's salary is currently 9% more than Doctor Carell's salary, so Professor Murphy's salary is ____%of Professor Carell's salary.

Correct AnswerverifiedB

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A poll was taken of a random sample of 1189 college students. Of these students, 789 reported that they had a Drinking binge (more than 10 drinks in an evening) in the past month. Select the most believable conclusion.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Of the 2542 students enrolled at a midwestern college, 156 were polled. Forty-two reported that they would Definitely buy books at the college bookstore. The bookstore should prepare for

Correct AnswerverifiedShow Answer

Identify the following variable as either qualitative or quantitative and explain why. -Outcome of tossing a coin

Correct AnswerverifiedShow Answer

Identify the following variable as either qualitative or quantitative and explain why. -A person's sex

Correct AnswerverifiedShow Answer

A newspaper reported "23,543,114 preteens have read one or more of the Harry Potter books." This figure is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Fill in the blank. Explain your reasoning. -If an elephant weighs 10% more than a rhino, then the elephant's weight is ____% of the rhino's weight.

Correct AnswerverifiedShow Answer

Answer the question. -A pharmacist puts 32 pills into a prescription order that calls for 30 pills. What is the absolute error?

Correct AnswerverifiedShow Answer

Provide an appropriate response. -A computer uses voice recognition software. Identify the potential error as random or systematic.

Correct AnswerverifiedShow Answer

Solve the problem. -Boys spend an average of $6100 on back-to-school clothes. Girls spend an average of $26,700. How much less is the boy's average expenditure, relatively, than the girl's expenditure (round to the nearest percent) ?

Correct AnswerverifiedShow Answer

Provide an appropriate response. -The approximate value of π\piπ is 3.1415927. Which of the following experimentally determined values is the most Accurate?

Correct AnswerverifiedA

Compared with a digital scale that gives readings as - - . - - g a scale that gives readings as- - , - - - g is

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate. -The sample of spheres categorized from softest to hardest

Correct AnswerverifiedShow Answer

A student in a statistics class chooses to determine the number of hours the average student studies for a statistics test. Discuss the accuracy and precision that would be expected in the summary report.

Correct AnswerverifiedThe researcher might well expect a syste...View AnswerShow Answer

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B

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B

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Provide an appropriate response. -The approximate value of $\pi$ is 3.1415927. Which of the following experimentally determined values is the most Accurate?

Correct Answer
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A

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The researcher might well expect a syste...
View Answer