2.The specific gravities (S.G.) of a number of radio-active components have beendetermined. The masses of the components have been found accurately, by weighingthem, but their geometry is complex and the volumes have been found by using the water-displacement method.18-718-318-418.918-818.619-218.919-818-817:019-519.3(a)Give details of the likely concerns associated with this process.(b)Perform a simple Q-test of the data to determine any outliers.(c)Using those data that you are confident are reliable, calculate the mean S.G. to 4 s.f.(d)Using those data that you are confident are reliable, calculate the standard deviationassociated with the S.Gs to 3 s.f.

(a) The process is determining the specific gravities of radioactive elements.

The specific gravities (S.G.) of a number of radio-active components have been determined. The masses of the components have been found accurately, by weighing them, but their geometry is complex and the volumes have been found by using the water- displacement method. 18-7 18-3 18.4 18.9 18-8 18-6 192 18.9 19.8 18-8 17:0 125 19:3 (a) Give details of the likely concerns associated with this process. (b) Perform a simple Q-test of the data determine any outliers. (c) Using those data that you are confident are reliable, calculate the mean S.G. to 4 s.f. (d) Using those data that you are confident are reliable, calculate the standard deviation associated with the S.Gs to 3 s.f.

The specific gravities (S.G.) of a number of radio-active components have been determined. The masses of the components have been found accurately, by weighing them, but their geometry is complex and the volumes have been found by using the water- displacement method. 18-7 18-3 18.4 18.9 18-8 18-6 192 18.9 19.8 18-8 17:0 125 19:3 (a) Give details of the likely concerns associated with this process. (b) Perform a simple Q-test of the data determine any outliers. (c) Using those data that you are confident are reliable, calculate the mean S.G. to 4 s.f. (d) Using those data that you are confident are reliable, calculate the standard deviation associated with the S.Gs to 3 s.f.

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter7: Components Of Optical Instruments

Section: Chapter Questions

Problem 7.20QAP

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