Statistics Module 10.1 1. Statistics Statistics are a powerful tool for finding patterns in data and...
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![Page 1: Statistics Module 10.1 1. Statistics Statistics are a powerful tool for finding patterns in data and inferring important connections between events in.](https://reader036.fdocuments.us/reader036/viewer/2022062401/5a4d1b367f8b9ab05999ceab/html5/thumbnails/1.jpg)
StatisticsModule 10.1
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Statistics
Statistics are a powerful tool for finding patterns in data and inferring important connections between events in the real world.
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Statistical Concepts
Branches of Statistics• Descriptive• Inferential
Presenting Data Descriptive Statistics
• Measures of Central Tendency• Measures of Variation• Shape of Distributions
Probability Fundamentals of Hypothesis Testing
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Five Basic Words of Statistics
Population Sample Parameter Statistic Variable
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Population
All of the members of a group which you want to draw a conclusion.
(i.e. Women in the army)
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Sample
The part of the population selected for analysis.
(i.e. Women in the army stationed in Iraq)
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Parameter
A numerical measure that describes a characteristic of the population.
(i.e. The percentage of women with children in the army)
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Statistic
A numerical measure that describes a characteristic of a sample.
(i.e. The percentage of women with children in the army who have completed a tour of duty in Iraq)
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Variable
A characteristic of an item or an individual that will be analyzed using statistics.• Discrete values• Continuous values
(i.e. The number of women with children in the army who have completed a tour of duty in Iraq that have been injured)
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Five Basic Words
Branches of Statistics• Descriptive• Inferential
Presenting Data Descriptive Statistics
• Measures of Central Tendency• Measures of Variation• Shape of Distributions
Probability Fundamentals of Hypothesis Testing
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Branches of Statistics
There are two branches the comprise the field of statistics.• Descriptive Statistics• Inferential Statistics
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Descriptive Statistics
Descriptive Statistics is the branch of statistics that focuses on collecting , summarizing and presenting data.
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Inferential Statistics
Inferential Statistics is the branch of statistics that analyzes sample data to draw conclusions about a population.
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Conclusion of Module 10.1
We have concluded discussing Module 10.1, Statistics Introduction.