MATH 225N Week 8 Assignment Coefficient of Determination

A medical experiment on tumor growth gives the following data table. xy 57 38 61 50 63 76 68 97 72 113 The least squares regression line was found. Using technology, it was determined that the total sum of squares (SST) was 3922.8 and the sum of squares of regression (SSR) was 3789.0. Calculate R2, rounded to three decimal places. Using technology, it was determined that the total sum of (SST) was 1421.2 R2 squares and the sum of squares due to error Calculate Correct answer R2=0.3643. and determine its meaning. Round your answer to four decimal places. A new mine opened and the number of dump truck loads of material removed was recorded. The table below shows the number of dump truck loads of material removed and the number of days since the mine opened. A least squares regression line was found. Using technology, it was determined that the SST) was 278.0 total sum of squares ( and the sum of squares of regression ( . Use these values to calculate the coefficient of determination. Round your answer to three decimal places. A new mine opened and the number of dump truck loads of material removed was recorded. The table below shows the number of dump truck loads of material removed and the number of days since the mine opened