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Lecture 01 AY 2015-16 Introduction to Statistics Methods of Data Collection Types of Data Levels of Measurement

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Introduction to Statistics
Introduction to Statistics

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Introduction to Statistics
Which is a better algorithm? Is there a pattern in the run times as the number of inputs is increased? Introduction to Statistics

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Statistics Need to apply method of addressing a complicated question through information described and analyzed objectively. Introduction to Statistics
American industry vs. Japanese industry Improvement of quality in American industry (1980s to the 21 st century) Industrial miracle in Japanese industry (middle 20 th century) Statistical methods Introduction to Statistics

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What is Statistics? Brief history: -- systematic collection of data on population and economy was begun in the Italian city-states of Venice and Florence during the Renaissance derived from the word state Refers to the collection of facts of interest to the state (e.g. births, deaths, marriages) Introduction to Statistics
Art of learning from data Singular sense: science that deals with the collection, organization, summarization, presentation, analysis and interpretation of data Singular sense: collection of tools for converting raw data into useful information to help decision makers in their work Plural sense: set/collection of quantitative data (e.g. population statistics, births) Introduction to Statistics

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Two Broad Categories of Statistics 1. Descriptive Statistics 2. Inferential Statistics Introduction to Statistics
Descriptive Statistics Involves collecting, organizing, summarizing, presenting and interpreting data Tries to describe data e.g. human population

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