In SPSS, how do I use the log of the dependent variable in a regression analysis?

To use the log of a dependent variable in a regression analysis, first create the log transformation using the COMPUTE command and the LN() function. Then specify the new variable in the regression model.

Suppose y is the original dependent variable and X is your independent variable. In the following example, ln_y is the name given to the new variable:

If you wish to compute the base 10 logarithm of y, use the function LG10(variable) instead of LN(y).

For more information about statistical and mathematical software, email the UITS Stat/Math Center, visit the center's web page, or phone 812-855-4724 (IUB) or 317-278-4740 (IUPUI). The center is located in Bloomington at 410 N. Park Avenue, and is open for consultation by appointment Monday-Friday 9am-5pm.

Also see:

• In SPSS, how do I collapse and recode a continuous variable?
• Finding help for statistical and mathematical computing at IU