# HP 30S Instruction Manual

hp calculators
HP 30S Statistics – Linear Regression
Linear Regression
Practice Solving Linear Regression Problems #### Summary of Contents for HP HP 30S

• Page 1 HP 30S Statistics – Linear Regression Linear Regression Practice Solving Linear Regression Problems...
• Page 2 If r = 0 then there’s no correlation: x and y are uncorrelated. On the HP 30S, linear regressions are calculated in 2-VAR STAT operating mode. First of all, let’s clear any previous data.
• Page 3 Find the linear regression line and the correlation coefficient for this data. Solution: First of all, we have to enter the given data, which is really easy on the HP 30S. Simply pressing a makes your calculator prompt you for the first value displaying “x =”...
• Page 4 Let’s enter it into the entry line by pressing: r30549.75-333*459.9/50s /pr231933-3333q/50sr43 08.57-459.9q/50and finally y. Answer: r = –0.12, so we can assume there’s no linear relation at all. hp calculators - 4 - HP 30S Statistics – Linear Regression - Version 1.0...
• Page 5 9.45 20.68 Solution: This problem can be solved on your HP 30S by making the substitutions y’ = ln y, and x’ = ln x. The model ⋅ becomes: , which is a linear form. Clear the statistical data ( –1, select CLR-DATA and press y) and enter the new data as follows: ah.5?h.47?h.75?h1.43?h1? 