+ Reply to Thread
Results 1 to 2 of 2

Thread: Least squares estimate of alpha and beta

  1. #1
    Points: 4, Level: 1
    Level completed: 7%, Points required for next Level: 46

    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Least squares estimate of alpha and beta




    My group have different opinions towards the following question:

    Find the least squares estimate of alpha and beta of the mechanistic growth
    model: Y=alpha*(1-beta*e^-x) using the following dataset.
    Y 1 1.1 1.39 1.55 1.63 1.86 1.98
    X 0 0.1 0.5 0.8 1 2 4

    What the question want us to do? What is the answer look like?(We are using excel to do the regression analysis)
    Curve fitting? Or just directly do the simple regression by the dataset?

    Thank you so much.

  2. #2
    Points: 2,462, Level: 30
    Level completed: 8%, Points required for next Level: 138

    Posts
    200
    Thanks
    20
    Thanked 48 Times in 43 Posts

    Re: Least squares estimate of alpha and beta


    Hi, you have data (one outcome Y and one predictor X) and you have a regression equation with two unknown parameters alpha and beta. Now you use Excel to make a regression fit based on the least squares method and using the regression formula above. The results are estimates for alpha and beta. "Least squares" only means a standard algorithm to find alpha and beta such that the curve fits the data.

+ Reply to Thread

           




Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats