Introduction to the Practice of Statistics 9th edition by David S. Moore Test bank
A)Quantitative
B)Categorical
C)Quantitative and Categorical
D)None of the above
17.Suppose you are interested in comparing the quality of different hospitals based on infections occurred from surgery. What would be the best way to measure such a variable?
A)Rate of infections
B)Count of infections
C)None of the above
18.Suppose you own a pizza delivery company and you are trying to determine the best campus on which to sell pizza. What would be the best measurement to make the comparison?
A)Average number of pizzas purchased
B)Count of pizzas purchased
C)Rate of pizzas purchased
D)None of the above
19.The first day of class the professor collects information on each student to make a data set that will be analyzed throughout the semester. The information asked includes hometown, GPA, number of classes, number of siblings, and favorite subject. How many variables are in this data set?
A)1
B)2
C)5
D)None of the above
20.The first day of class, the Professor collects information on each student to make a data set that will be analyzed throughout the semester. The information asked includes; hometown, GPA, number of classes taking, number of siblings, and favorite subject. How many quantitative variables are in this data set?
A)1
B)2
C)3
D)5
21.The first day of class the professor collects information on each student to make a data set that will be analyzed throughout the semester. The information asked includes hometown, GPA, number of classes, number of siblings, and favorite subject. How many categorical variables are in this data set?
A)1
B)2
C)3
D)4
22.The first day of class the professor collects information on each student to make a data set that will be analyzed throughout the semester. The information asked includes hometown, GPA, number of classes, number of siblings, and favorite subject. What are the cases in this data set?
A)The semester
B)The professor
C)The college students
D)None of the above
23.Below is a data set with information on students in a basic statistics class at a local university. Which variable is the label?
Student IDGPAHometownMajor
234553.1ChicagoMath
236723.2DCStatistics
45724AtlantaApplied Math
896752.1Kansas CityUndeclared
655463.2New York CityBiology
77892.8RaleighBiology
909562.2Santa MonicaStatistics
563783RichmondHistory
364553.8DallasPhysics
4645611.1AustinAnthropology
A)Student ID
B)GPA
C)Hometown
D)Major
24.Below is a data set with information on students in a basic statistics class at a local university. What is a key characteristic of the data set?
Student IDGPAHometownMajor
234553.1ChicagoMath
236723.2DCStatistics
45724AtlantaApplied Math
896752.1Kansas CityUndeclared
655463.2New York CityBiology
77892.8RaleighBiology
909562.2Santa MonicaStatistics
563783RichmondHistory
364553.8DallasPhysics
4645611.1AustinAnthropology
A)There are 10 students in the data set.
B)The data describe students in a class.
C)There are three variables in the data set.
D)All of the above
25.Below is a data set with information on students in a basic statistics class at a local university. Are there any striking deviations from the overall pattern for the quantitative variable in the data set?
Student IDGPAHometownMajor
234553.1ChicagoMath
236723.2DCStatistics
45724AtlantaApplied Math
896752.1Kansas CityUndeclared
655463.2New York CityBiology
77892.8RaleighBiology
909562.2Santa MonicaStatistics
563783RichmondHistory
364553.8DallasPhysics
4645611.1AustinAnthropology
A)No, the data follow the same pattern.
B)Yes, there is an outlier.
C)Too few data points to determine
D)None of the above.
26.Categorical variables are best displayed by ______.
A)histograms
B)pie charts
C)bar graphs
D)pie charts or bar graphs
27.The distribution of a categorical variable is displayed using _______.
A)letters
B)counts
C)percentages
D)counts or percentages
28.When using a pie chart, the sum of all the percentages should be _____.
A)0
B)1
C)100