#### Overview of this book

There are many algorithms for data analysis and it’s not always possible to quickly choose the best one for each case. Implementation of the algorithms takes a lot of time. With the help of Mathematica, you can quickly get a result from the use of a particular method, because this system contains almost all the known algorithms for data analysis. If you are not a programmer but you need to analyze data, this book will show you the capabilities of Mathematica when just few strings of intelligible code help to solve huge tasks from statistical issues to pattern recognition. If you're a programmer, with the help of this book, you will learn how to use the library of algorithms implemented in Mathematica in your programs, as well as how to write algorithm testing procedure. With each chapter, you'll be more immersed in the special world of Mathematica. Along with intuitive queries for data processing, we will highlight the nuances and features of this system, allowing you to build effective analysis systems. With the help of this book, you will learn how to optimize the computations by combining your libraries with the Mathematica kernel.
Mathematica Data Analysis
Credits
www.PacktPub.com
Preface
Free Chapter
First Steps in Data Analysis
Broad Capabilities for Data Import
Creating an Interface for an External Program
Analyzing Data with the Help of Mathematica
Discovering the Advanced Capabilities of Time Series
Statistical Hypothesis Testing in Two Clicks
Predicting the Dataset Behavior
Rock-Paper-Scissors – Intelligent Processing of Datasets
Index

## Importing data in Mathematica

In order to import data into Mathematica, the `Import` function is used. Let's see how this feature is used in practice.

If you need to simply import the file, you can do it as follows:

```Import["file_name"]
```

However, in practice, it is much more useful to use additional parameters of this function. Let's consider the following example.

Let's suppose we need to import the data on unemployment. We will take the information from the http://unstats.un.org/unsd/mbs/app/DataSearchTable.aspx page in the Topic list, select EMPLOYMENT, UNEMPLOYMENT AND EARNINGS and in the Table list select 11 Unemployment. Then, select all the countries with the Shift button. After that download data by clicking on the Get data button and then clicking on the Download in CSV button, and save it into the `C:\MathData\Unemployment.csv` file.

In order to import data, let's select the `Import` function:

### Note

Note that in Mathematica, `\` is a special character. This is why in order to specify the path correctly...