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finding the "y" intercept

  • 19-01-2010 1:37pm
    #1
    rowa
    Closed Accounts Posts: 2,296 ✭✭✭


    i need to know how you find the y intercept on a graph , i am doing weibull distribution at the moment and am being asked to find the slope which is easy but also the y intercept when x= 0 .
    i can't simply follow the line until it does so as some of the graphs are far too steep and where the intercept is is miles off the paper .

    anyone ?


Comments

  • #2
    Fremen
    Registered Users, Registered Users 2 Posts: 2,481 ✭✭✭Fremen


    Have you got an equation for the density function of the Weibull distribution? Don't bother graphing it: you know Y = f(x), so just whack in f(0).

    If you only know the shape and scale parameters, you should still be able to work it out pretty easily from the wikipedia article.


  • #3
    rowa
    Closed Accounts Posts: 2,296 ✭✭✭rowa


    its a simple matter to find the values for the x and y axis and then we are to plot them on graph paper , finding the slope is easy enough as its delta y over delta x , it is a line of best fit , but is a straight line graph .


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