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Rafał Waśko - articles

Customer Effort Score (CES)

Customer Effort Score (CES), along with Net Promoter Score (NPS), and Customer Satisfaction (CSAT), is one of the key indicators related to clients' satisfaction. All these three...

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Scatter Plot

A scatter plot (also referred to as a scatter graph) is a plot with two perpendicular axes, where two variables are presented.

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Net Promoter Score (NPS)

Researching customer satisfaction and loyalty is currently an inseparable part of running a business that is focused on developing and building their advantage over competitors....

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Violin plot

Before starting a more complex data analysis, it is worth taking a closer look at variable distributions which are of interest to us.

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Hierarchical graph

Hierarchical data can be presented using various visualisations. Today’s article will focus on the hierarchical graph.

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Series plot

The series plot is a type o linear or layered plot most often used to represent changes in time. The plot may represent size for a primary variable category or statistics for a...

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Building charts with bricks

Data visualisation helps present in an attractive way information that could be difficult to interpret in the form of a table. Undoubtedly, for many managers, the phrase ‘time is...

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