BUSA2182 Introduction to Business Statistics
Order ID |
53563633773 |
Type |
Essay |
Writer Level |
Masters |
Style |
APA |
Sources/References |
4 |
Perfect Number of Pages to Order |
5-10 Pages |
Description/Paper Instructions
BUSA2182 Introduction to Business Statistics
Spring 2019 Exam 2 March 8, 8:00 PM
BUSA2182 – Introduction to Business Statistics
Exam 2
March 8, 8:00 PM
Instructor: Hadi Farhangi
NOTES:
- Open book, notes, homework, and additional exercise.
- There are 6 questions.
- Internet is NOT allowed unless asked in a question.
- One calculator is allowed for calculation.
- Write all your answers on file.
- The test is worth 125 points.
- You are required to write out the essential definitions, descriptions, formulas and procedures for getting full score.
- write in red in front of each question. Take snapshots of your screen and past it in front of a question if needed for Excel calculations. Do not upload any excel file. All answers should be included in a single word document!
- You are required to read and sign the Honor Code below:
I have neither given nor received aid on this examination,
nor have I concealed any violation of the Honor Code.
Name (print) _____________________________________
Student ID _______________________________________
Initials, date: ___________________________________
Q1. True or False
- Quartiles divide a set of sorted observations into 5 parts and deciles divide a set of sorted observations into 10 parts ( ).
- Boxplot shows the different quartiles of data ( ).
- Line plot and scatter plot show the relationship between two variables ( ).
- Probability is any value that describe the relative possibility of event that will occur ( ).
- A random variable is a variable that takes different values with different probabilities ( ).
- Probability distribution is a listing of some the outcomes of an experiment and the probability associated with each outcome ( ).
Q2. The state department records the number cars passing over a bridge daily to predict the fatigue of the bridge for the future maintenance plan. The daily data for two-week period is as follows:
250 |
291 |
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298 |
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309 |
298 |
286 |
240 |
283 |
243 |
For this data:
- Draw box-plot using Excel. Paste the outcome here!
- Calculate Q1, Q3, D3, D6, P45. Show all steps of calculation.
Q3. Consider the data in the previous question (Q2).
- Calculate Pearson Skewness for this data. Show all steps of calculation.
Calculate and then sk.
- Calculate Software Skewness for this data. Show all steps of calculation. You need to fill the following table after calculating .
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Data 1 |
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Data 12 |
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Data 13 |
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Data 14 |
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Sk=? (Show all steps of calculation)
- Calculate Skewness using Excel and copy and paste your results here.
Q4. We roll a dice three times. Calculate following probabilities while showing all steps of calculation:
- What is the probability that we see 6 at all rolls?
- What is the probability that we see 6 at the first roll and no 6 6 at the remaining rolls?
- What is the probability that we see at least one 6 while rolling the dice 3 times?
Q5. A CPA (Certified Public Accountant) studied the number of exemptions claimed on tax returns. The data is summarized in the following table:
Exemptions |
Percent |
1 |
20% |
2 |
50% |
3 |
20% |
4 |
10% |
- What is the mean number of exemptions claimed? (Show all steps of calculation and use the formula : you can use the direct formulation or tables)
- What is the variance of the number of exemptions claimed? (Show all steps of calculation and use the formula : you can use the direct formulation or tables)
Q6. A study of the checkout lines at Safeway supermarket revealed that between 4 pm and 7 pm on weekdays, there is average of 4 customers waiting in a line. Assume you are a manager in the supermarket and you are observing that line in that given period; calculate the following by showing all steps of calculation:
- No customer is waiting in the line!
- Totally 4 customers are waiting in the line!
- In total, 4 or fewer (at most 4) customers are waiting in the line!
- In total, 4 or more (at least 4) customers are waiting in the line!
RUBRIC
QUALITY OF RESPONSE |
NO RESPONSE |
POOR / UNSATISFACTORY |
SATISFACTORY |
GOOD |
EXCELLENT |
Content (worth a maximum of 50% of the total points) |
Zero points: Student failed to submit the final paper. |
20 points out of 50: The essay illustrates poor understanding of the relevant material by failing to address or incorrectly addressing the relevant content; failing to identify or inaccurately explaining/defining key concepts/ideas; ignoring or incorrectly explaining key points/claims and the reasoning behind them; and/or incorrectly or inappropriately using terminology; and elements of the response are lacking. |
30 points out of 50: The essay illustrates a rudimentary understanding of the relevant material by mentioning but not full explaining the relevant content; identifying some of the key concepts/ideas though failing to fully or accurately explain many of them; using terminology, though sometimes inaccurately or inappropriately; and/or incorporating some key claims/points but failing to explain the reasoning behind them or doing so inaccurately. Elements of the required response may also be lacking. |
40 points out of 50: The essay illustrates solid understanding of the relevant material by correctly addressing most of the relevant content; identifying and explaining most of the key concepts/ideas; using correct terminology; explaining the reasoning behind most of the key points/claims; and/or where necessary or useful, substantiating some points with accurate examples. The answer is complete. |
50 points: The essay illustrates exemplary understanding of the relevant material by thoroughly and correctly addressing the relevant content; identifying and explaining all of the key concepts/ideas; using correct terminology explaining the reasoning behind key points/claims and substantiating, as necessary/useful, points with several accurate and illuminating examples. No aspects of the required answer are missing. |
Use of Sources (worth a maximum of 20% of the total points). |
Zero points: Student failed to include citations and/or references. Or the student failed to submit a final paper. |
5 out 20 points: Sources are seldom cited to support statements and/or format of citations are not recognizable as APA 6th Edition format. There are major errors in the formation of the references and citations. And/or there is a major reliance on highly questionable. The Student fails to provide an adequate synthesis of research collected for the paper. |
10 out 20 points: References to scholarly sources are occasionally given; many statements seem unsubstantiated. Frequent errors in APA 6th Edition format, leaving the reader confused about the source of the information. There are significant errors of the formation in the references and citations. And/or there is a significant use of highly questionable sources. |
15 out 20 points: Credible Scholarly sources are used effectively support claims and are, for the most part, clear and fairly represented. APA 6th Edition is used with only a few minor errors. There are minor errors in reference and/or citations. And/or there is some use of questionable sources. |
20 points: Credible scholarly sources are used to give compelling evidence to support claims and are clearly and fairly represented. APA 6th Edition format is used accurately and consistently. The student uses above the maximum required references in the development of the assignment. |
Grammar (worth maximum of 20% of total points) |
Zero points: Student failed to submit the final paper. |
5 points out of 20: The paper does not communicate ideas/points clearly due to inappropriate use of terminology and vague language; thoughts and sentences are disjointed or incomprehensible; organization lacking; and/or numerous grammatical, spelling/punctuation errors |
10 points out 20: The paper is often unclear and difficult to follow due to some inappropriate terminology and/or vague language; ideas may be fragmented, wandering and/or repetitive; poor organization; and/or some grammatical, spelling, punctuation errors |
15 points out of 20: The paper is mostly clear as a result of appropriate use of terminology and minimal vagueness; no tangents and no repetition; fairly good organization; almost perfect grammar, spelling, punctuation, and word usage. |
20 points: The paper is clear, concise, and a pleasure to read as a result of appropriate and precise use of terminology; total coherence of thoughts and presentation and logical organization; and the essay is error free. |
Structure of the Paper (worth 10% of total points) |
Zero points: Student failed to submit the final paper. |
3 points out of 10: Student needs to develop better formatting skills. The paper omits significant structural elements required for and APA 6th edition paper. Formatting of the paper has major flaws. The paper does not conform to APA 6th edition requirements whatsoever. |
5 points out of 10: Appearance of final paper demonstrates the student’s limited ability to format the paper. There are significant errors in formatting and/or the total omission of major components of an APA 6th edition paper. They can include the omission of the cover page, abstract, and page numbers. Additionally the page has major formatting issues with spacing or paragraph formation. Font size might not conform to size requirements. The student also significantly writes too large or too short of and paper |
7 points out of 10: Research paper presents an above-average use of formatting skills. The paper has slight errors within the paper. This can include small errors or omissions with the cover page, abstract, page number, and headers. There could be also slight formatting issues with the document spacing or the font Additionally the paper might slightly exceed or undershoot the specific number of required written pages for the assignment. |
10 points: Student provides a high-caliber, formatted paper. This includes an APA 6th edition cover page, abstract, page number, headers and is double spaced in 12’ Times Roman Font. Additionally, the paper conforms to the specific number of required written pages and neither goes over or under the specified length of the paper. |
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