In such instances, an investigator may be interested in measuring the strength of the relationship. Strong correlation is found to occur between several morphometric features of a tree. For instance, several soil properties like nitrogen content, organic carbon content or pH are correlated and exhibit simultaneous variation. In other words, there is a correlation between the two variables. Based on the normal probability plot, are the error terms normally distributed? Circle the appropriate response.In many natural systems, changes in one attribute are accompanied by changes in another attribute and that a definite relation exists between the two. LINEARITY INDEPENDENCE NORMALITY EQUAL VARIANCES NO VIOLATIONS d Based on the residual plot, is this model appropriate? Circle the appropriate response. independence, normal distribution of errors, and equal variance among error terms) is violated in this regression? Circle one response.
which of the underlying regression assumptions (Linearly.
Write the estimated simple linear regression equation here (rounding to thousandths) c. Based on the normal probability plot, are the error terms normally distributed? Circle the appropriate response. Based on the residual plot, is this model appropriate? Circle the appropriate response.
LINEARITY INDEPENDENCE NORMALITY EQUAL VARIANCES NO VIOLATIONS d. Based on the residual plot, which of the underlying regression assumptions (linearity, independence, normal distribution of errors, and equal variance among error terms) is violated in this regression? Circle one response. Include residual analysis and the probability plot. Use Excel to find the estimated simple regression equation that relates the dependent variable y (MPG) to the independent variable x (Weight) for a sample of 12 cars.
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