The following table contains 2 variables and 5 observations. x1 174 176 239 235 136 x2 192 166 226 182 188 a. Create a new variable called "Sum" that contains the sum of the values of x₁ and x2 for each observation. What is the average value of Sum? Note: Round your answer to two decimal places. Average value of Sum b. Create a new variable called "Difference" that contains the absolute difference between the values of x₁ and x₂ for each observation. What is the average value of Difference? Note: Round your answer to two decimal places. Average value of Difference

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