QNT 561 (APPLIED BUSINESS RESEARCH & STATISTICS) COMPLETE CLASS
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QNT 561 (APPLIED BUSINESS RESEARCH & STATISTICS) COMPLETE CLASS – A+ WORK
QNT 561 Applied Business Research and Statistics (The most recent course)
QNT 561 Week 1 Practice Problems
Chapter 2 and 4
June 18, 2012
Chapter 2 answers
Sample mean = (3.2+2.5+2.1+3.7+2.8+2.0)/6 = 16.3/6 = 2.717
The median is the middle value when the data set is ordered.
Here since we have even number of observations we need to find the average of the two middle values.
Ordered data: 2.0, 2.1, 2.5, 2.8, 3.2, 3.7
Median = (2.5+2.8)/2 = 2.65
a. Mean = Sum/n = 85/10 = 8.5
b. Mean = Sum/n = 400/16 = 25
c. Mean = Sum/n = 35/45 = 0.778
d. Mean = Sum/n = 242/18 = 13.444
Week 1 Dq1:
How may variance and standard deviation be applied to a real-world business-related problem? Provide a specific application in which these measures are useful.
Week 1 Dq2
When would you use Chebyshev’s theorem and the empirical rule in business? How are they calculated? Provide one real-life example that requires Chebyshev’s theorem and one that requires the empirical rule.
Business Research Methods Part I
Electronic books are becoming more popular because it offers portability, flexibility, larger capacity, and affordability. Barnes and Noble recognize the need to evaluate this change and therefore conduct a business research to determine the best approach to modify the business strategy. The learning team will determine an appropriate business research method to conduct a survey. The survey will be a series of questions from this organizational dilemma to this problem. Defining the problem will assist in determining an appropriate research…