31 Jan 11. What is the difference betwe
Questions 1 to 20: Select the best answer to each question. Note that a question and its answers may be split across a page break, so be sure that you have seen the entire question and all the answers before choosing an answer.
1. A study was conducted of the 12-month earnings per share for two categories of airline companies, with the result shown in the chart below. Based on the data, which of the following statements is correct?
Large Airlines
Small Airlines
$4.36 $1.60
6.19 –1.98
–0.42 1.03
3.73 –0.21
0.26 –1.15
6.27 4.19
0.59
1.52
1.97
4.57
0.05
A. The large airlines have a mean earnings per share of 3.40, and the small airlines have a standard deviation of 2.01.
B. The large airlines have a standard deviation of 2.88, and the small airlines have a standard deviation of 4.04.
C. The large airlines have a mean earnings per share of 3.40, and the small airlines have a mean earnings per share of 1.22.
D. The large airlines have a variance of 4.04, and the small airlines have a variance of 8.30.
2. Which of the following involves inferential statistics as opposed to descriptive statistics? A. The city business office reported 35 building permits for new single-family housing units.
B. A class of 50 statistics students earned an average grade of 73.5.
C. The Alcohol, Tobacco and Firearms department reported that Houston had 1,791 registered gun dealers in 1997.
D. A local cable system, using a sample of 500 subscribers, estimates that 40 percent of its subscribers watch a premium channel at least once per day.
3. Which of the following statements about interpreting standard deviation is true? A. Chebyshev’s Rule can’t be applied unless the frequency distribution is mound-shaped and symmetric. The Empirical Rule can be applied to any data set, regardless of the shape of its frequency distribution.
B. Neither the Empirical Rule nor Chebyshev’s Rule can be applied to data unless the frequency distribution is mound-shaped and symmetrical.
C. The Empirical Rule can’t be applied unless the frequency distribution is mound-shaped and symmetric. Chebyshev’s Rule can be applied to any data set, regardless of the shape of its frequency distribution.
D. Neither Chebyshev’s Rule nor the Emprical Rule require any assumptions about the frequency distribution.
4. Which type of plot takes quantitative data and forms classes out of it, thus turning it into qualitative data? A. Stem-and-leaf plot
B. Dot plot
C. Histogram
D. Pie chart
5. To answer the question, refer to the following list of raw data.
63, 71, 72, 77, 77, 78, 86, 77, 88, 88
What is the mean for the data? A. 77
B. 77.5
C. 77.7
D. 88
6. Consider the following distribution:
Which of the following would you expect? A. There’s no difference in the values of the mean, median, and mode.
B. The mean is greater than the median, and the median is greater than the mode.
C. The mean is less than the median, and the median is less than the mode.
D. The mean is greater than the mode, which in turn is greater than the median.
7. If there are an odd number of data values in a set, the median will be the
A. value that appears the greatest number of times.
B. average of the two end values.
C. average of all of the values divided by the number of values in the set.
D. value that appears in the center.
8. To answer the question, refer to the following data.
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, 5, 5, 5, 5, 6
What is the variance for the data values? A. 1.687
B. 2.844
C. 1.6
D. 2.56
9. To answer the question, refer to the following list of raw data.
63, 71, 72, 77, 77, 78, 86, 77, 88, 88
What is the mode for the data? A. 77.5
B. 88
C. 77.7
D. 77
10. Use the following data sample to answer the question.
4, 14, 6, 9, 21, 3, 7, 10
What is the standard deviation of this data sample? A. 34.79
B. 4.31
C. 243.5
D. 5.90
11. What is the difference between a histogram and a bar chart? A. The adjacent rectangles in a bar chart have a gap, while those for a histogram don’t.
B. A histogram reflects qualitative data, while the bar chart represents quantit
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteEdu. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
Do you need help with this question?
Get assignment help from WriteEdu.com Paper Writing Website and forget about your problems.
WriteEdu provides custom & cheap essay writing 100% original, plagiarism free essays, assignments & dissertations.
With an exceptional team of professional academic experts in a wide range of subjects, we can guarantee you an unrivaled quality of custom-written papers.
Chat with us today! We are always waiting to answer all your questions.