Understanding risk in AB Testing

Risk Tolerance & Error in AB Testing

Minimizing Type I and Type II Error

There’s much more subjectivity in statistics than we give it credit for. All of the mathematical variables put in place are based upon assumptions. One of the most important assumptions made during the AB Testing process is the risk tolerance. 0% risk is an impossibility in the world of statistics, and, generally speaker, less risk equates to more time and money. It’s a careful balancing act between minimizing risk and maximizing resources.

If you’re not familiar with statistics, the error terms being thrown around can

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Tableau Fundamentals: An Introduction to Dashboards and Distribution

Individual worksheets in Tableau can lead to powerful insights that help your business, but many times, it makes sense to combine the worksheets into a single dashboard. By combining varying visualizations into a dashboard, you and your audience are able to analyze different aspects of the data in context of each other. This is a much more intuitive experience than viewing the visualizations individually.

In addition to this one obvious benefit, Tableau comes with several technical features that allow you to control the user experience and even the ability to have

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Tableau 201: How to Make a Tree Map

A tree map is a visualization that nests rectangles in hierarchies so you can compare different dimension combinations across one or two measures (one for size; one for color) and quickly interpret their respective contributions to the whole. When used poorly, tree maps are not much more than an alternative pie chart. When used well, they provide at least two big benefits:

Depending on the analysis, some portions of the tree map will be composed of large rectangles where additional context can be added as labels. This is beneficial when the

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Tableau Fundamentals: An Introduction to Connecting to Data

Once you have chosen the best Tableau product for you, it is time to start finding insights in your data! Much like Tableau’s suite of products, data connections come in many shapes and sizes. As of this writing, Tableau Desktop: Personal has four different types of data connections, and Tableau Desktop: Professional adds another 48 native ways to connect to data. That doesn’t even count the ability to access web data through customized connectors or ODBC connections.

As you can imagine from the breadth of connection options, you can connect to

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Choosing Multivariate or A/B Testing

Optimizing your website is important. The best visitor acquisition campaign in the world doesn’t matter if consumers aren’t converting once they visit your website. Likewise, implementing every tweak that you think could optimize conversions doesn’t matter if you don’t know what’s working. That’s where testing comes in. This blog walks you through the fundamentals of multivariate and A/B testing.

A/B.N Testing

A/B testing is a common way to optimize website performance. It generally consists of forming a hypothesis around what changes should be made, and then developing a Test version of your

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Evolytics’ Ryan Sleeper Selected as Tableau Zen Master

Evolytics is thrilled to share the news that Ryan Sleeper, Director of Data Visualization, has been selected as Tableau Zen Master 2016-1017.

Ryan has been recognized by Tableau for his mastery of the product, his willingness to share knowledge and his desire to help Tableau improve its solutions of tomorrow. Nominated by the Tableau community, Zen Masters are selected based on their contributions from the previous year, as well as how they:

Demonstrate a deep understanding of how Tableau works
Run a Tableau Center of Excellence, applying to all aspects of Tableau products

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Tableau Cluster Analysis Feature

How to Make a Cluster Analysis in Tableau 10

Clustering is a powerful new feature in Tableau 10 that allows you to easily group similar dimension members. This type of clustering helps you create statistically-based segments which provide insight into how different groups are similar as well as how they are performing compared to each other. I’ve always leaned on segmentation as a tactic for making my analyses with Tableau more powerful, and the post, How to Create a Scatter Plot in Tableau, shares how to make a simple quadrant-based segmentation. Clustering takes this a step further by statistically

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An Introduction to Tableau Sets Feature

Tableau Fundamentals: An Introduction to Sets

Tableau sets allow you to isolate specific segments of a dimension, and can then be used in several different ways to find insights in your data. This post provides instructions on how to build sets as well as five different ways they can be used to enhance your analyses.

Sets can be thought of as custom segments, but unlike dimension fields, they are always binary. In other words, you are either in the set or not. Other than that one restriction, sets can be created for just about anything. You can

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Tableau Fundamentals: An Introduction to Filters

Tableau provides the ability to filter individual views or even entire data sources on dimensions, measures, or sets. This filtering capability can serve a variety of purposes including minimizing the size of the data for efficiency purposes, cleaning up underlying data, removing irrelevant dimension members, and setting measure or date ranges for what you want to analyze. What’s more, most of these filters can be put into the hands of you and your end users to change – a powerful tactic for finding stories in the data. This post offers

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Tableau Heat Map Feature

Tableau 201: How to Make a Heat Map

Heat maps are a visualization where marks on a chart are represented as colors. As the marks “heat up” due their higher values or density of records, a more intense color is displayed. These colors can be displayed in a matrix / crosstab, which creates a highlight table, but can also be displayed on a geographical map or even a customized image – such as a webpage used to show where users are clicking.

That being said, heat maps are defined somewhat differently in Tableau, and this post shares how to

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