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# 1. Define the term linear regression. 2. How to perform linear regression in SPSS? 3. What is the equivalent to R 2 in simple linear regression?

**1. Define the term linear regression.**

**2. How to perform linear regression in SPSS?**

**3. What is the equivalent to R****2**** in simple linear regression?**

**4. Provide an example where the outlier is more important to the research than the other observations?**

**5. When R****2 ****is more useful than R in linear regression?**

please with references .