Statistics WebWork 1 Quiz Exam 43 Questions with Verified
Answers
A description of different houses on the market includes the following three
variables. Which of the variables is quantitative?
A. The exterior paint colors.
B. The monthly electric bill.
C. The street number.
D. The school district.
E. None of the above. - CORRECT ANSWER B. The monthly electric bill.
A survey records many variables of interest to the researchers conducting the
survey. Below are some of the variables from a survey conducted by the U.S.
Postal Service. Which of the variables is categorical?
A. Number of people, both adults and children, living in the household.
B. Total household income, before taxes, in 1993.
C. Age of respondent.
D. County of residence.
E. None of the above. - CORRECT ANSWER D. County of residence.
Here are the amounts of money (cents) in coins carried by 10 students in a
statistics class:
50 35 0 97 76 0 0 87 23 65
To make a stemplot of these data, you would use stems
A. 0, 2, 3, 5, 6, 7, 8, 9.
B. 00, 10, 20, 30, 40, 50, 60, 70, 80, 90.
C. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
D. None of the above. - CORRECT ANSWER C. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
To display the distribution of grades (A, B, C, D, F) in a course, it would be correct
to use
A. either a pie chart or a bar graph.
B. a pie chart but not a bar graph.
C. a bar graph but not a pie chart.
D. None of the above. - CORRECT ANSWER A. either a pie chart or a bar graph.
, A political party's data bank includes the zip codes of past donors, such as
47906 34236 53075 10010 90210 75204 30304 99709
Zip code is a:
A. Quantitative variable.
B. Unit of Measurement.
C. Categorical variable.
D. None of the above. - CORRECT ANSWER C. Categorical variable.
The timeplot below gives the share price in dollars of General Electric stock, with
the bar chart giving the volume in millions of shares. The plots are for the one-
year period September 2001-September 2002.
Which of the following is a true statement?
A. There has been a general upward trend in the stock price over this time period.
B. There has been a general downward trend in the stock price over this time
period.
C. The price should return to 40 dollars within six months because of the cycle.
D. The price of General Electric stock has been stable for this year.
E. None of the above - CORRECT ANSWER B. There has been a general downward
trend in the stock price over this time period
The maximum price per share for this time period was about
A. 20 dollars.
B. 25 dollars.
C. 41 dollars.
D. 45 dollars.
E. None of the above. - CORRECT ANSWER C. 41 dollars.
If you bought a single share of stock at the maximum price and sold it at the
minimum price during this one-year period, you would have lost about
A. 15 dollars.
B. 45 dollars.
C. 35 dollars.
D. 25 dollars.
E. Cannot be determined from the graph. - CORRECT ANSWER A. 15 dollars.
In drawing a histogram, which of the following suggestions should be followed?
Answers
A description of different houses on the market includes the following three
variables. Which of the variables is quantitative?
A. The exterior paint colors.
B. The monthly electric bill.
C. The street number.
D. The school district.
E. None of the above. - CORRECT ANSWER B. The monthly electric bill.
A survey records many variables of interest to the researchers conducting the
survey. Below are some of the variables from a survey conducted by the U.S.
Postal Service. Which of the variables is categorical?
A. Number of people, both adults and children, living in the household.
B. Total household income, before taxes, in 1993.
C. Age of respondent.
D. County of residence.
E. None of the above. - CORRECT ANSWER D. County of residence.
Here are the amounts of money (cents) in coins carried by 10 students in a
statistics class:
50 35 0 97 76 0 0 87 23 65
To make a stemplot of these data, you would use stems
A. 0, 2, 3, 5, 6, 7, 8, 9.
B. 00, 10, 20, 30, 40, 50, 60, 70, 80, 90.
C. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
D. None of the above. - CORRECT ANSWER C. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
To display the distribution of grades (A, B, C, D, F) in a course, it would be correct
to use
A. either a pie chart or a bar graph.
B. a pie chart but not a bar graph.
C. a bar graph but not a pie chart.
D. None of the above. - CORRECT ANSWER A. either a pie chart or a bar graph.
, A political party's data bank includes the zip codes of past donors, such as
47906 34236 53075 10010 90210 75204 30304 99709
Zip code is a:
A. Quantitative variable.
B. Unit of Measurement.
C. Categorical variable.
D. None of the above. - CORRECT ANSWER C. Categorical variable.
The timeplot below gives the share price in dollars of General Electric stock, with
the bar chart giving the volume in millions of shares. The plots are for the one-
year period September 2001-September 2002.
Which of the following is a true statement?
A. There has been a general upward trend in the stock price over this time period.
B. There has been a general downward trend in the stock price over this time
period.
C. The price should return to 40 dollars within six months because of the cycle.
D. The price of General Electric stock has been stable for this year.
E. None of the above - CORRECT ANSWER B. There has been a general downward
trend in the stock price over this time period
The maximum price per share for this time period was about
A. 20 dollars.
B. 25 dollars.
C. 41 dollars.
D. 45 dollars.
E. None of the above. - CORRECT ANSWER C. 41 dollars.
If you bought a single share of stock at the maximum price and sold it at the
minimum price during this one-year period, you would have lost about
A. 15 dollars.
B. 45 dollars.
C. 35 dollars.
D. 25 dollars.
E. Cannot be determined from the graph. - CORRECT ANSWER A. 15 dollars.
In drawing a histogram, which of the following suggestions should be followed?
