# QNT 561 UOP Course Tutorial / Uophelp

## QNT 561 UOP Course Tutorial / Uophelp

QNT 561 Week 1 DQ 1

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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.

QNT 561 Week 1 Individual Practice Problems (Chapter 2 and 4)

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Complete the following Week One Practice Problems in MyStatLab®:

• Ch. 2 of Statistics for Business and Economics

o 2.37, 2.38, 2.44, 2.46, 2.54, 2.64, 2.68, 2.79, 2.85, 2.89, 2.93, 2.94, 2.106, and 2.108

• Ch. 4 of Statistics for Business and Economics

o 4.1, 4.12, 4.13, 4.21, 4.79, 4.80, 4.81, 4.89, 4.91, 4.106, and 4.124

QNT 561 Week 2 DQ 1

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What are some examples of operational definitions in research design within your profession? For example, in the education field, graduation rate and retention rate are important operational definitions to measure progress of students. Likewise other professions have common metrics and definitions. Identify some metrics and operational definitions from your own career or a profession that you know well. Tell us why you think it is important!

QNT 561 Week 2 DQ 2

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What is the purpose of sampling? What are some concerns and dangers of sampling? How important is the sample design to data validity? Explain. Provide an example where a sample might misrepresent data validity. For example, reflect on the current political campaign and the pollsters!

QNT 561 Week 2 Individual Practice Problems (Chapter 4 and 5)

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Complete the following Week Two Practice Problems in MyStatLab®:

• Ch. 4 of Statistics for Business and Economics

o 4.156, 4.164, 4.169, and 4.172

• Ch. 5 of Statistics for Business and Economics

5.4, 5.8, 5.25, 5.37, 5.41, 5.50, 5.56, 5.75, 5.77, 5.79,...