![]() For instance, how often do a deciduous tree and a coniferous tree appear in the same painting? We know that 57 percent of paintings contain a deciduous tree and 53 percent of paintings contain a coniferous tree. Now that we know the basic probabilities of individual tags, we can also find the joint probabilities of some of these events. Here’s how often each tag that appeared more than five times showed up over the 381 episodes: Once he’d painted one tree, he didn’t paint another - he painted a “friend.” He didn’t paint oaks or spruces, he painted “happy trees.” He favored “almighty mountains” to peaks. The top-line results are to be expected - wouldn’t you know, he did paint a bunch of mountains, trees and lakes! - but then I put some numbers to Ross’s classic figures of speech. I analyzed the data to find out exactly what Ross, who died in 1995, painted for more than a decade on TV. store, I coded all the episodes 1 using 67 keywords describing content (trees, water, mountains, weather elements and man-made structures), stylistic choices in framing the paintings, and guest artists, for a grand total of 3,224 tags. Based on images of Bob Ross’s paintings available in the Bob Ross Inc. Of the 403 episodes of “The Joy of Painting” - whose first run was from 1983 to 1994 and which continues to air in reruns on PBS stations nationwide - Ross painted in 381, and the rest featured a guest, most frequently his son Steve Ross. The Bob Ross name and images are trademarks of Bob Ross Inc. Paintings by Bob Ross featured on PBS’s “The Joy of Painting.” His time there seems to have had a significant impact on his preferred subjects of trees, mountains, clouds, lakes and snow. He was stationed in Fairbanks and spent the next 20 years in Alaska. Ross was born in Daytona, Fla., and joined the Air Force at 17. ![]() What I found - through data analysis and an interview with one of Ross’s closest collaborators - was a body of work that was defined by consistency and a fundamentally personal ideal. So let’s perm out our hair and get ready to create some happy spreadsheets! ![]() I decided to use that data to teach something myself: the important statistical concepts of conditional probability and clustering, as well as a lesson on the limitations of data. He guided fans along as he painted “happy trees,” “almighty mountains” and “fluffy clouds” over the course of his 11-year television career on his PBS show, “The Joy of Painting.” In total, Ross painted 381 works on the show, relying on a distinct set of elements, scenes and themes, and thereby providing thousands of data points. ![]()
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