Sheldon Kallio

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as:     Pie charts are useful for visualizing proportions of a whole, making it easy to compare the relative sizes of categories. However, pie charts have a somewhat bad reputation because of their potential to misrepresent data, especially […]

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as:     Pie charts are a widely and (often) inappropriately used form of data visualization. Their simplicity makes them appealing to visualize parts of a whole. However, pie charts are often misused, leading to the misinterpretation or distortion […]

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as: Slope charts are an extension of line charts ideal for presenting changes over time. While line charts are effective at illustrating change over multiple time periods, slope charts excel at illustrating changes between two distinct time periods. The […]

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as:     Eval Academy just released a new template, “Stratified Sampling Tool”! Who’s it for? The Stratified Sampling Tool is designed for researchers, evaluators, and data analysts who need to collect representative samples from large datasets. Anyone dealing […]

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as:     Here we will continue our Data Visualization Applications series with an introduction to line charts. Line charts are a versatile and effective tool for charting time series or continuous data. Here we will outline how to […]

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as:     In our evaluations, we use varying methods to collect random, representative samples. In most instances, collecting data on all members of a population isn’t feasible (i.e., too expensive and time intensive). Therefore, we rely on sampling […]

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as:     The placement of axis labels in our data visualizations plays an important role in enhancing the clarity and impact of our charts. While Excel is a powerful tool for creating impactful data visualizations, its default charts […]

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as:     Introduction As evaluators, we are presented with a swath of data from varying sources, which often contains personally identifiable information (PII). PII includes any data which can be used to identify an individual. These data may […]

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as:     This is an accompanying piece to our Data Visualization Applications: Bar Charts tutorial.  While the standard bar chart is one of the simplest and most effective data visualizations, we sometimes want alternatives to freshen up our […]

This is an Eval Central archive copy, find the original at evalacademy.com. This article is rated as:     This will be the first installment in our Data Visualization Applications series. Here we will outline how to transform your data into effective data visualizations using our own tried and tested Data Visualization Best Practices. And […]