Math Monday: OLS Regression and School Prices


Do extra selective schools be offering extra grant support? How does the standard web value of school examine to the sticky label value? Via this visible and interactive job, scholars will use real-world knowledge to discover each the ones questions whilst construction their conceptual working out of regression. 

Let’s dive into DESMOS: OLS Regression and School Prices from the Monetary Algebra path!


Phase 1: Decal Value and Internet Value

First, scholars have a look at a scatterplot of the online value and sticky label value for 15 US schools. This small knowledge set will make it simple for college kids to visualise the regression procedure; on the other hand, this can be a respectable illustration of 4-year schools around the nation in response to knowledge from NCES.


Subsequent, scholars estimate the road of perfect are compatible for the information set. At the following display, they see the r2 worth for his or her line and will toggle a button to turn the squared residuals visually. 

Then, they are able to click on the “regress it!” button to peer their line transfer to turn into the road of perfect are compatible. This permits scholars to visualise the connection between the road, the r2 worth, and the squared residuals.



Phase 2: Acceptance Price and Grant Support

As soon as scholars have constructed familiarity with Desmos and OLS regression, they transfer to any other knowledge set: acceptance fee and reasonable scholar grant support. Once more, scholars in finding the road of perfect are compatible for the information set however this time, they are able to use the r2 worth and residuals to assist them.



Then, scholars dive into research – they give an explanation for why their line is a great are compatible, analyze what would occur if the outlier was once got rid of, and imagine different varieties of purposes that could be a greater are compatible.



Via this Desmos job, scholars intuitively experiment with strains of perfect are compatible and use visible comments to fortify their working out of r2.


We are hoping you loved this job! You’ll in finding this and extra within the NGPF Monetary Algebra Desmos Assortment.

the Creator

Kathryn Dawson

Kathryn (she/her) is happy to enroll in the NGPF staff after 9 years of revel in in training as a mentor, tutor, and particular training trainer. She is a graduate of Cornell College with a point in coverage research and control and has a grasp’s stage in training from Brooklyn School. Kathryn is having a look ahead to bringing her interest for accessibility and academic justice into curriculum design at NGPF. All through her unfastened time, Kathryn loves embarking on cooking tasks, strolling round her Seattle group together with her spouse and canine, or lounging in a hammock with a e book.



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