Statistics is the study of the collection, organization, analysis, interpretation, and presentation of data. It deals with all aspects of data, including the planning of its collection in terms of the design of surveys and experiments. Some consider statistics a mathematical body of science that pertains to the collection, analysis, interpretation or explanation, and presentation of data, while others consider it a branch of mathematics concerned with collecting and interpreting data. Because of its empirical roots and its focus on applications, statistics is usually considered a distinct mathematical science rather than a branch of mathematics.

A statistician is someone who is particularly well-versed in the ways of thinking necessary to successfully apply statistical analysis. Such people often gain experience through working in any of a wide number of fields. Statisticians improve data quality by developing specific experimental designs and survey samples. Statistics itself also provides tools for predicting and forecasting the use of data and statistical models. Statistics is applicable to a wide variety of academic disciplines, including natural and social sciences, government, and business. Statistical consultants can help organizations and companies that don't have in-house expertise relevant to their particular questions.


Table Of Content :

1 Introduction to Statistics and Statistical Thinking
2 Statistics in Practice
3 Visualizing Data
4 Frequency Distributions
5 Describing, Exploring, and Comparing Data
6 Measures of Variation
7 Sampling
8 Probability
9 Probability and Variability
10 Continuous Random Variables
11 Correlation and Regression
12 Estimation and Hypothesis Testing
13 Other Hypothesis Tests
14 A Closer Look at Tests of Significance



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