linear regression

  1. B

    Yes its me again probably with another really easy question

    Thanks so much for the help on the last question. I promise I am not doing homework. I am really just trying to figure out how this stuff works. I am pretty sure that I am just not seeing something on this one too. Like the last one I did not deduce the mean. Simple Statistics...
  2. B

    I dont know why finding an intercept is so hard

    Thanks in advance to whoever helps =)! I am trying to find the intercept for a linear regression with 10 observations. Given: Sxy=120 Sxx=42 Sum of x=50 Sum of y=100 I found the slope it is 2.857. I have looked at all the formulas and decided that the means are what I really need...
  3. D

    Linear regression-Urgent help required

    I'm kind of freaking out as I have a presentation next week but there is a problem with my results that I have to present. I am doing linear regression looking at the effect that different foods have on BMI etc, however no matter WHAT I do, the r-squared value is working out ridiculously low...
  4. L

    Correlation and Linear Regression

    Hello! I am new to this forum and new to statistics and I am everything that the word "confused" encompasses. I am stuck on a homework question and cannot proceed until I figure it out. A sample of 88 Puget Sound butter clams' widths had mean 4.4 and standard deviation 1.8. Their lengths had...