blog posts, data visualization David White blog posts, data visualization David White

Monday, July 19, 2021

As literacy rises, so does income…Read More

 

Insights, Made Fresh Daily

Literacy vs. Income

As literacy rises, so does income

David White | Monday, July 19, 2021

This bar graph illustrates the relationship between income and literacy rates among various countries. The underlying data was released by the United Nations.

It’s clear from the data that income correlates with a country’s literacy rate. Upper-middle income countries have a 93% literacy rate. In contrast, the literacy rate in low-middle income countries is only 57%.

 
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blog posts, data visualization David White blog posts, data visualization David White

Friday, July 2, 2021

Counterintuitively, student-to-teacher ratios were not a reliable predictor of exam success…Read More

 

Insights, Made Fresh Daily

Some Unexpected Results

Counterintuitively, student-to-teacher ratios were not a reliable predictor of exam success

David White | Friday, July 2, 2021

This scatterplot shows the relationship between NYC schools’ average class size and their state exam results. The underlying data was released by the New York State Education Department (NYSED).

The data graphic shows the English Language Arts (ELA) and Math exam scores of New York City public school students in Grades 3–8. While there was a small amount of correlation between small class sizes and high exam marks, there were in fact many examples where schools with large class sizes earned high scores. Conversely, there were also several schools with small class sizes who did not perform as well as their peers.

 
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