Lesson 5: Linear Regression

February 2, 2022

ATTN: For Thu, Feb 3 we will meet via Zoom!

Please use this ZOOM LINK to attend class beginning at 11:15am.

Review:

• Scatterplots
• Trendline

Presentation:

• ZOOM LINK
• Simple Linear Regression
  • Bivariate (2 variables)
  • i.e., one x and one y variable
• Demonstrate Estimation with Linear Regression
  • Pueblo RE 2014 – 100 rows
  • Total SqFt = x/independent/explanatory variable
  • Selling Price = y/dependent/response variable
  • Generate Scatterplot
    • Fit Trendline
    • Label with Equation and R²
  • Replicate linear equation in spreadsheet
  • Estimate Price assuming SqFt = 1200, 1600, 2000

Assignment:

• Background
  • Read Denver Post Article about 2018 snowpack
  • Arkansas: Arkansas Basin Snowpack vs Previous Years
• Use Snowpack n Runoff data
  • Source: National Water and Climate Center, USDA
  • Snowpack = x/independent/explanatory variable
  • Runoff = the y/dependent/response variable
  • Generate Scatterplot
    • Fit Trendline
    • Label with Equation and R²
  • Replicate linear equation in Sheets
  • Estimate Runoff assuming March Snowpack = 10, 15, 20