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Williams, Linda. Tidewater Community College. www.tcc.edu. Probability and Statistics for Business and Economics. “Module 1 Lecture Notes: Introduction to Statistics.” 2014. Microsoft powerpoint.
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Module 1:Introduction to Statistics
http://flic.kr/p/8groME
Statistics in Business
What is Statistics?
• Science or Math or BOTH?• Numerical Measurement• Statistical Process– Collect– Analyze– Interpret– Present
Branches of Statistics
Definitions. . .
• Census
• Population
• Sample
Population vs. Samples
Population vs. Samples
• Mean
• Variance
• Standard Deviation
• Proportion
• Mean
• Variance
• Standard Deviation
• Proportion
Inferential Statistics
Levels of Data: Nominal
Levels of Data: Ordinal
Levels of Data: Interval
Levels of Data: Ratio
What can you do with that?
TYPE OF DATA
Nominal
Ordinal
Interval
Ratio
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