Math Problem Statement

y: 0.006927703, yint: 0.059646296**. propagate uncertainty**

Solution

To propagate the uncertainty in a linear equation of the form y=mx+cy = mx + c, where mm is the slope and cc is the y-intercept, uncertainties in both parameters can affect the results.

Here, your values are:

  • Slope (yy): m=0.006927703m = 0.006927703
  • Y-intercept (cc): c=0.059646296c = 0.059646296

Steps for Uncertainty Propagation

  1. Determine the uncertainties in mm and cc:

    • Are these uncertainties provided? If not, you'll need to know them to calculate the propagated uncertainty.
  2. Propagating the total uncertainty: The total uncertainty in yy, for a given xx, is propagated using:

    σy=(x2σm2)+σc2\sigma_y = \sqrt{\left( x^2 \cdot \sigma_m^2 \right) + \sigma_c^2 }

    where:

    • σm\sigma_m = uncertainty in slope (mm)
    • σc\sigma_c = uncertainty in y-intercept (cc)
    • xx = the input variable
  3. Plugging in values: If you provide the uncertainties σm\sigma_m and σc\sigma_c, we can compute σy\sigma_y.

Example:

Let’s assume:

  • Uncertainty in slope σm=0.0001\sigma_m = 0.0001

  • Uncertainty in y-intercept σc=0.001\sigma_c = 0.001

  • For x=5x = 5, uncertainty propagation becomes:

    σy=(520.00012)+(0.0012)\sigma_y = \sqrt{(5^2 \cdot 0.0001^2) + (0.001^2)}

    Computing this would yield:

    σy=(25108)+106=3.5106=0.00187\sigma_y = \sqrt{(25 \cdot 10^{-8}) + 10^{-6}} = \sqrt{3.5 \cdot 10^{-6}} = 0.00187

  1. The result for yy at x=5x = 5 would include this uncertainty.

Let me know your specific uncertainties for mm and cc, and I can refine this computation.


Would you like to explore this further? Below are some related questions:

  1. What are the actual uncertainties for mm and cc in your case?
  2. Do you need a detailed derivation for this formula?
  3. Is there a

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Math Problem Analysis

Mathematical Concepts

Uncertainty Propagation
Linear Equations

Formulas

Uncertainty propagation formula: σ_y = √((x² * σ_m²) + σ_c²)

Theorems

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Suitable Grade Level

Undergraduate