. The following replicate calcium determinations on a blood sample using atomic absorption

spectrophotometry (AAS) and a new colorimetric method were reported. Is there a significant

difference in the precision of the two methods? (04)

AAS

(mg/dL)

Colorimetric

(mg/dL)

10.9 9.2

10.1 10.5

10.6 9.7

11.2 11.5

9.7 11.6

10.0 9.3

10.1

11.2