TemplateJavascript ObjectsFor LoopsReturningPushing into an ArraySVG ContainersCirclesRectanglesLinesGroupsRotationScalingMaking a BarbellPathsRandomnessArrays of Random NumbersIntro to D3Grouping with D3Rotation with D3Barbell AgainSaving the SelectionRandom CirclesRandom Circles 2Random Circles 3Paths with D3Paths with D3 Part 2ScalesAxesPlotting Exercise 1Plotting Exercise 2x and y AxesMore on AxesSlidersSelect BoxRadio ButtonsSliders in ActionSelect in ActionRadio Buttons in ActionFunctionsClick EventsIf StatementsClick Events (Toggle)Mouseover/Mouseout EventsDragging EventsPlotting PointsHorizontal and Vertical LinesSlope of a SegmentEquation of a LineHere's x, what's y?Vertical Distance to a Line or CurveA Way To Think About RegressionHow Close is the Line?OverfittingTest SetsData SetsData AnalysisLogistic RegressionClassificationFinal Problem 1 TemplateFriday LessonMore with GroupsScalesProgramming TutorialRegression PracticeGreat Pumpkin TemplateSpider Web TemplateAnother Baseball ExampleLinear RegressionClassificationFinal Problem 1 Practice (11 AM Section)Final Illustrations
Linear Regression (another example)
rmse = {
const a = []
for(let i = 0; i < 128; i = i + 1){
const x = pirates[i].SO
const y = pirates[i].HR
const yhat = slope*x + intercept
const diff = y - yhat
const sqDiff = diff*diff
a.push(sqDiff)
}
return math.sqrt(d3.mean(a))
}
.13*1000 - 4
Purpose-built for displays of data
Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
