# QNT 561 (APPLIED BUSINESS RESEARCH & STATISTICS) COMPLETE CLASS

## QNT 561 (APPLIED BUSINESS RESEARCH & STATISTICS) COMPLETE CLASS

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)

Week 1
Assignments:
QNT 561 Week 1 Practice Problems
Chapter 2 and 4
Name
QNT 561
June 18, 2012
Debasis Bhattacharya

2.37

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

2.38

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 Chebyshevâ€™s theorem and the empirical rule in business? How are they calculated? Provide one real-life example that requires Chebyshevâ€™s theorem and one that requires the empirical rule.
Week 2
Assignments: