Two students calibrated their 10.00 mL pipets and obtained the data shown below

Question

Two students calibrated their 10.00 mL pipets and obtained the data shown below The tolerance of the device is plusminus0.04 ml. Which of the following statements about these data is true? Student X has evidence of a significant indeterminate (random) error. Student X can use the value of 10.00 mL as the volume of pipet X without introducing any significant error in an analysis Student Y has evidence of a significant indeterminate (random) error. Student Y can use pipet Y without correction because the standard deviation is so small. Student Y can use the value of 9.70 mL as the volume of pipet Y without introducing any significant error in an analysis. Systematic or determinate errors

Explanation / Answer

7). Following statements about these data are ture:

e). I and V

I - It is because standard deviation of the calibration data is very large also the mean value (10.10 mL) of the volume is greater than the actual volume of the pipet.

V - This option is true because the mean value (9.70 mL) of the volume is less than the actual volume of the pipet and also the standard deviation of the calibration data is very small and is negotiable.

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