Refer to the Analytical Chemistry (May 2010) study in which medical researchers tested a new method of typing blood using lost cost paper, Exercise 10.6. The data were used to fit the straight-line model relating y = wicking length to x = antibody concentration.

a. Give the values of SSE, s², and s shown on the SPSS printout below.

b. Give a practical interpretation of s. Recall that wicking length is measured in millimeters.

Data from Exercise 10.6

In Analytical Chemistry (May 2010), chemical engineers tested a new method of typing blood using lost cost paper. Blood drops were applied to the paper and the rate of absorption (called blood wicking) was measured. The table below gives the wicking lengths (millimeters) for six blood drops, each at a different antibody concentration. Let y = wicking length and x = antibody concentration.

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Model Summary Adjusted R Śquare Model Std. Error of the Estimate R Square .670 .819a .587 2.35944 a. Predictors: (Constant), ABConc ANOVA Model Sum of Squares df Mean Square F Sig. 1. Regression 45.201 1 45.201 8.119 .046 Residual 22.268 4 5.567 Total 67.469 a. Predictors: (Constant), ABConc b. Dependent Variable: WickLength