Question

The table below gives the number of parking tickets received in one semester and the GPA for five randomly selected college students who drive to campus. Using this data, consider the equation of the repression line y bo + bix. for predicting the GPA of a college student who drives to campus based on the number of parking tickets they receive in one semester. Keep in mind, the correlation coefficient may or may not be statistically significant for the data ven. Remember, in practice, it would not be appropriate to use the regression line to make a prediction if the correlation coefficient is not statistically significant Number of Tickets - 39 38 35 33 3 Table Copy Data Step 1 of 6: Find the estimated slope. Round your answer to three decimo places. Answer How to enter your answer Tables Keypad

Answer 1

slope is -.149

Sum of X = 26 Sum of Y = 17.5 Mean X= 5.2 Mean Y= 3.5 Sum of squares (SSx) = 22.8 Sum of products (SP) = -3.4 Regression Equation = û = bx + a b= SPISSX=-3.4/22.8 = -0.14912 a = My - bMy = 3.5 - (-0.15*5.2) = 4.27544 û = -0.14912X + 4.27544

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