Math Problem Statement

find the appropriate regression equation using y1~mx1+b

Find the appropriate regression equation using y1~mx1+b.

Solution

To find the regression equation in the form y=mx+by = mx + b using the data you provided, we can use linear regression techniques. This involves calculating the slope mm and intercept bb for the line that best fits the data points.

Data:

  • Year (x): 0, 1, 2, 3, 4, 6, 10
  • Value (y): 18,500, 15,900, 13,750, 11,600, 10,120, 9,200, 8,000

Let's calculate the linear regression and find the equation y=mx+by = mx + b. I'll start by performing these calculations now.The linear regression equation based on the given data is:

y=1001.36x+16157.90y = -1001.36x + 16157.90

Where:

  • m=1001.36m = -1001.36 (slope)
  • b=16157.90b = 16157.90 (intercept)

This equation describes the relationship between the year and the value in dollars.

Would you like a detailed explanation of how this equation was derived, or any further analysis?

Here are 5 related questions you might want to explore:

  1. How accurate is this linear model in predicting future values?
  2. Can we calculate the residuals to evaluate the fit of the model?
  3. How would the equation change if another data point were added?
  4. What is the significance of the negative slope in this context?
  5. Could a different type of regression (e.g., quadratic) provide a better fit?

Tip: The slope mm indicates the rate of change, showing how much the value decreases per year in this model.

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Math Problem Analysis

Mathematical Concepts

Linear Regression
Algebra

Formulas

Linear Equation y = mx + b

Theorems

Least Squares Method for Linear Regression

Suitable Grade Level

Grades 10-12