
Define data literacy, why it matters in a data-driven world, and describe three mastery levels from data illiterate to data expert, focused on collecting, interpreting, and communicating data.
Master data literacy by collecting and preparing data, then exploring, visually and numerically describing it, transforming datasets, and storytelling to drive action, using Excel and PowerPoint.
Learn how to collect and prepare data responsibly under laws like GDPR and CCPA. Emphasize ethical practices, informed consent, anonymity, and confidentiality to gain public goodwill and valid data.
Assess data quality and generalizability before analysis by examining data sources, measurement methods, outliers, and missing data to avoid garbage in, garbage out and ensure reliable results.
Learn practical ways to simplify and adapt data for analysis. Convert text to numbers, use averages and multiple questions, and apply appropriate metrics such as moving averages and ROI.
Discover how data visualizations reveal patterns, clusters, and outliers, show the shape of datasets, and improve communication beyond raw numerical summaries.
Master bar charts for visualizing qualitative and quantitative data, analyze distributions and comparisons, and use descending order, horizontal and stacked variants to reveal insights by region, gender, and product.
Discover best practices for pie charts, compare donut and bar chart alternatives, and learn when sorting by size improves readability and highlighting a segment clarifies proportions.
Explore box plots to interpret data using the five-number summary, box and whisker diagram, and interquartile range, and identify outliers and distribution shape.
Welcome to the Describing Data Numerically section of the course!
Throughout this section I will be working with several datasets that I have provided to all of you in Excel. I highly recommended that you download the "Describing Data Numerically - Blank" Excel file and follow along as you watch the videos. I specifically recommend pausing the video and trying to arrive at the same numbers I do by writing your own formulas within Excel.
To help you get started with some of the Excel formulas I have also attached a "Describing Data Numerically Excel Cheat Sheet" file that walks through a basic example of all the formulas that will be used in this section. I recommend you leverage that cheat sheet to help you as you work through this section of the course.
As always, if you want to check your work there is the "Describing Data Numerically - Answers" Excel file that is available for download.
Now, let's move onto the videos!
Explore how mean, median, and mode—the measures of central tendency—are used and why outliers and skew can mislead the mean, with house prices to sharpen news interpretation.
Analyze customer data using variability measures to define a target market. Identify age and distribution through quartiles and regions to target young professional females in the east.
Explore rescaling data with z-scores to interpret how many standard deviations a value is from the mean, compare distributions, and assess probabilities.
Learn how to present data-driven marketing insights clearly and actionably, using an ROI case study to compare radio, print, and TV, and emphasize a strong call to action.
discover how visualizations clarify data by highlighting key information, captioning takeaways, organizing values from largest to smallest, and graying out distractions to improve interpretation.
Use context with numerical descriptors to convert averages and standard deviations into actionable inventory decisions, illustrated by a pizza shop case study.
Collect and prepare data, explore distributions visually, and describe data numerically with z-scores and the normal distribution's empirical rule to boost data literacy for business professionals.
The data revolution is coming!
Around the globe companies are relying on data to make optimal decisions and bring about better solutions for their customers.
To stay ahead of the curve and not be left behind you need to develop data literacy - the ability to understand data and guide a data driven analysis process. By the end of this course, you will be prepared to lead a data driven project from start to finish. Data literacy will enable you to stand out among peers as you are able to drive robust data-driven decision making to your organization.
With over 20 lectures and two and a half hours of video, you will be exposed to many topics including how to collect and prepare a dataset, ways to explore data visually, how to effectively summarize a dataset with millions of rows into just a few numbers, and how to present all your results effectively at the end of a project. You will also have the opportunity to practice what we learn as you go along in the course! Downloadable Excel files will be available so students can apply the concepts as they learn them and arrive at the same results I do in each lecture.
The course is broken down into the four steps you must take when working on any data analysis project:
Collecting and Preparing Data
Exploring Data Visually
Describing Data Numerically
Telling the Story
I look forward to seeing you in the course and helping you develop data literacy!