FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 1: Data and Statistics

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

Multiple Choice

Review LaterAdd Note

Review Later

Exhibit 1-5 The following is a frequency distribution of the monthly expenditures for long distance telephone service of 200 households in Chattanooga. $\begin{array}{|c|c|c|}\hline\text { Class } & \text { Expenditure \$) } & \text { \# of households } \\\hline 1 & 0 \text { and under } 20 & 42 \\\hline 2 & 20 \text { and under 40 } & 64 \\\hline 3 & 40 \text { and under } 60 & 34 \\\hline 4 & 60 \text { and under } 80 & 28 \\\hline 5 & 80 \text { and under } 100 & 20 \\\hline 6 & 100 \text { and over } & 12\\\hline\end{array}$ -Refer to Exhibit 1-5. What is the proportion of households with monthly expenditure for long distance service of either below $60 or at least $100?

A) .70
B) .76
C) .84
D) .53

E) A) and B)
F) B) and C)

Correct Answer

verified

Show Answer

Question 2

Multiple Choice

Review LaterAdd Note

Review Later

Exhibit 1-2 In a sample of 1,600 registered voters, 912, or 57%, approve of the way the President is doing his job. -Refer to Exhibit 1-2. The 57% approval is an example of

A) a sample
B) Data and Statistics
C) statistical inference
D) a population

E) A) and B)
F) B) and D)

Correct Answer

verified

Show Answer

Question 3

Multiple Choice

Review LaterAdd Note

The weight of a candy bar in ounces is an example of

Arithmetic operations are inappropriate for

Categorical data

Since a sample is a subset of the population, the sample mean

One hundred students from a large university were asked about their opinion on the new health care program. The 100 represents

The Department of Transportation of a city has noted that on the average there are 17 accidents per day. The average number of accidents is an example of

Which of the following variables use the ratio scale of measurement?

Income is an example of

Michael, Inc., a manufacturer of electric guitars, is a small firm with 50 employees. The table below shows the hourly wage distribution of the employees. $\begin{array} { c c } \text { Hourl Wages In Dollars) } & \text { Number of Employees } \\10 - 13 & \mathbf { 8 } \\14 - 17 & 12 \\18 - 21 & 20 \\22 - 25 & 10\end{array}$ a. How many employees receive hourly wages of at least $18? b. What percentage of the employees has hourly wages of at least $18? c. What percentage of the employees has hourly wages of less than $14?

Which of the following is not a scale of measurement?

Which of the following is a scale of measurement?

Methods for developing useful decision-making information from large data bases is known as

Data collected at the same, or approximately the same, point in time are

The sample size

Exhibit 1-1 In a recent study based upon an inspection of 200 homes in Daisy City, 80 were found to violate one or more city codes. -Refer to Exhibit 1-1. The city manager released a statement that 40% of Daisy City's 2,000 homes are in violation of city codes. The manager's statement is an example of

Data collected over several time periods are

The number of cases will always be the same as the number of

The following national weather report gives the temperatures and weather conditions on the previous day in cities across the nation. $\begin{array}{|l|c|c|l|}\hline {\text { City }} & \text { Hi } & \text { Low } & \text { Condition } \\\hline \text { Albany, N.Y. } & 88 & 60 & \text { cloudy } \\\hline \text { Chicago } & 92 & 64 & \text { d ear } \\\hline \text { Dallas-Ft. Worth } & 89 & 72 & \text { cloudy } \\\hline \text { Denver } & 75 & 54 & \text { clear } \\\hline \text { Hartford } & 88 & 61 & \text { cloudy } \\\hline \text { Honolulu } & 86 & 70 & \text { clear } \\\hline \text { Kansas City } & 93 & 74 & \text { clear } \\\hline \text { Los Angeles } & 80 & 62 & \text { cloudy } \\\hline \text { Nashville } & 94 & 72 & \text { rain } \\\hline \text { New York City } & 90 & 69 & \text { rain } \\\hline \text { Philadelphia } & 90 & 67 & \text { rain } \\\hline\end{array}$ a. How many elements are in this data set? b. How many variables are in this data set? c. How many observations are there in the above data set? d. Which variables are categorical and which are quantitative? e. What measurement scale is used for temperature and weather conditions?