Education

25 posts
Teaching R to 7th graders

Joshua Rosenberg describes his one-day experience teaching R to 7th graders: [T]he activity worked albeit, as a very gradual introduction to using R. In combination with starting with modest goals, having the right tools (R Studio Cloud, R Markdown, and a suitable data set), I think, helped to make this work. 7th-graders can (start to) use R. The goal that Alex and I have is for students to be able...

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Graph literacy, in a sense

Ben Jones tweeted out this chart, which has an unusual feature: What's unusual is that time runs in both directions. Usually, the rule is that time runs left to right (except, of course, in right-to-left cultures). Here, the purple area chart follows that convention while the yellow area chart inverts it. On the one hand, this is quite cute. Lines meeting in the middle. Converging. I get it. On the...

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The rule governing which variable to put on which axis, served a la mode

When making a scatter plot, the two variables should not be placed arbitrarily. There is a rule governing this: the outcome variable should be shown on the vertical axis (also called y-axis), and the explanatory variable on the horizontal (or x-) axis. This chart from the archives of the Economist has this reversed: The title of the accompanying article is "Ice Cream and IQ"... In a Trifecta Checkup (link), it's...

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Announcement: Advancing your data skills, Fall 2019

Interrupting the flow of dataviz with the following announcement. If you're looking to shore up your data skills, modernize your skill set, or know someone looking for hands-on, high-touch instruction in Machine Learning, R, Cloud Computing, Data Quality, Digital Analytics,  A/B Testing and Financial Analysis, Principal Analytics Prep is offering evening classes this Fall. Click here to learn about our courses.  Our instructors are industry veterans with 10+ years of...

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Bachelor’s Degree Movers

As industries change and interests shift, some bachelor's degrees grow more popular while others become less so. Read More

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Tightening the bond between the message and the visual: hello stats-cats

The editors of ASA's Amstat News certainly got my attention, in a recent article on school counselling. A research team asked two questions. The first was HOW ARE YOU FELINE? Stats and cats. The pun got my attention and presumably also made others stop and wonder. The second question was HOW DO YOU REMEMBER FEELING while you were taking a college statistics course? Well, it's hard to imagine the average...

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A chart makes an appearance in my new video

Been experimenting with short videos recently. My latest is a short explainer on why some parents are willing to spend over a million dollars to open back doors to college admissions. I even inserted a chart showing some statistics. Click here to see the video.   Also, subscribe to my channel to see future episodes of Inside the Black Box. *** Here are a couple of recent posts related to...

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Cost of College

We know that more education usually equals more income, but as the cost of education continues to rise, the challenge to earn a college degree also increases. Read More

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Visually exploring the relationship between college applicants and enrollment

In a previous post, we learned that top U.S. colleges have become even more selective over the last 15 years, driven by a doubling of the number of applicants while class sizes have nudged up by just 10 to 20 percent.  The top 25 most selective colleges are included in the first group. Between 2002 and 2017, their average rate of admission dropped from about 20% to about 10%, almost...

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An exercise in decluttering

My friend Xan found the following chart by Pew hard to understand. Why is the chart so taxing to look at?  It's packing too much. I first notice the shaded areas. Shading usually signifies "look here". On this chart, the shading is highlighting the least important part of the data. Since the top line shows applicants and the bottom line admitted students, the shaded gap displays the rejections. The numbers...

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