Both business and science undertake research to survive and thrive. It is invariably a complex process that requires not only knowledge but also experience. Ultimately, however, data is always key, which will be my focus here. This post will attempt to define data, its purpose, whether or not it can be classified using specific criteria, and whether data comes solely from research. WIĘCEJ
In this article I will introduce Automatic linear modelling, a procedure for linear models available in PS IMAGO PRO.
This procedure is intended to make life easier for those who work on large datasets and want to use regression models. Automatic linear models lack many advanced settings and options for model exploration that can be found in other regression procedures. On the other hand, as with other procedures of this kind, it speeds up and streamlines data processing. WIĘCEJ
The decision tree is a popular and effective algorithm used primarily in classification work, but it also serves well in predicting quantitative phenomena. The charm of methods based on decision trees comes mainly from the fact that they present us with a set of convenient decision, or business rules. WIĘCEJ
Today, we will look into Social Network Analysis (SNA), or Social Relation Analysis. SNA is the investigation of a community through the study of relationships between its members. It combines statistics, sociology, and social psychology. It is not, however, merely a theoretical concept, but more rather another source of knowledge that is gaining in popularity WIĘCEJ
The dashboard is a form of reporting, which allows the analyst to convey information in a concise way. The dashboard report is usually a one-pager showing the current and historical information on key indicators. Such reports are usually prepared for managers to help them make quick decisions. WIĘCEJ
Surveys often use questions where respondents assess different elements on the same scale. Such questions are often intended to create an index or scale through a synthetic approach to the investigated phenomenon, but sometimes it is advantageous to present the distribution of responses to sub-questions. WIĘCEJ
When analysing data on migration, transport, international trade, or traffic on a website, you are often faced with the problem of visualising the flow between the analysed units. You can do this with bar charts, structural juxtaposition using cumulative charts, or sometimes using a table with appropriate gradient filling. Generally speaking, there are many ways to approach this but, in reality, most of them overlook the problem of flow visualisation. When faced with a hierarchical or multi-staged phenomenon (such as traffic on individual pages of a website, travel with a connecting flight), standard forms of visualisation fail miserably. The latest version of PS IMAGO PRO offers a solution to your flow visualisation challenges: the Sankey diagram. WIĘCEJ
Frequency, group structure, or percentage share analysis is one of the first tasks of an analyst. The most basic form of statistical description is the table (useful in particular for analysing qualitative variables), which contains both counts and aggregated statistics (shares, sums, averages, etc.). Still, it is a rather unattractive form of result visualisation. This WIĘCEJ
Hierarchical data can be presented using various visualisations. Joanna Sarata already explained how to present nested hierarchical data as an icicle chart in her article ‘Visualising decision trees – the classic refurbished’. Today’s article will focus on the hierarchical graph. This type of visualisation is also referred to as the sunburst chart. WIĘCEJ
Correspondence analysis is one of the most convenient and popular exploratory techniques in data analysis. It offers a quick and clear visualisation of a relationship in a contingency table. An in-depth description of the procedure for transforming tabulated data into a perceptual map can be found in an earlier article. Using the SVD algorithm discussed in that article, values corresponding to the individual row and column profiles are transformed by thePS IMAGO PRO analytical engine into coordinates used in a typical frame of reference. WIĘCEJ
This blog is devoted to data collection and analysis with articles that aim to inspire data analysts from across the business world, academia and public sector. Our articles endeavor to inform, educate and entertain with one goal in mind: to show how to transform data into clear, attractive and usable information. We invite you to read and share.