National Bureau of Standards Miscellaneous PublicationU.S. Government Printing Office, 1964 |
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Page 13
... average recovery value possibly was due to The authors express their appreciation to L. Depue and the foundry staff at the Naval Research Laboratory both for their suggestions in the final development of the casting procedure and for ...
... average recovery value possibly was due to The authors express their appreciation to L. Depue and the foundry staff at the Naval Research Laboratory both for their suggestions in the final development of the casting procedure and for ...
Page 16
... Average Recovery Values Concentration Element Range % Expected Obtained % % C 2.0 to 4.0 90 88 Mn 0.3 to 1.5 95 95 P .05 to 0.8 100 99 S .03 to .2 80 68 Si .5 to 3.2 95 90 Cu .2 to 1.5 100 101 Ni .1 to 3.0 100 100 Cr .08 to 2.0 100 100 ...
... Average Recovery Values Concentration Element Range % Expected Obtained % % C 2.0 to 4.0 90 88 Mn 0.3 to 1.5 95 95 P .05 to 0.8 100 99 S .03 to .2 80 68 Si .5 to 3.2 95 90 Cu .2 to 1.5 100 101 Ni .1 to 3.0 100 100 Cr .08 to 2.0 100 100 ...
Page 19
... average which is obtained by dividing the calculated standard deviation by the square root of the number of values on which the average is based . Providing that the analytical method of testing provides high precision , such as shown ...
... average which is obtained by dividing the calculated standard deviation by the square root of the number of values on which the average is based . Providing that the analytical method of testing provides high precision , such as shown ...
Page 20
... .008 .0014 % Difference from mean 1.32 .59 .43 Test level , % .0042 .001 .0004 Significance Statistical yes yes yes Practical no no no Test level : standard deviation of the reported average . " center " and " edge " as small as 20.
... .008 .0014 % Difference from mean 1.32 .59 .43 Test level , % .0042 .001 .0004 Significance Statistical yes yes yes Practical no no no Test level : standard deviation of the reported average . " center " and " edge " as small as 20.
Page 18
... average , which is obtained by dividing the calculated standard deviation by the square root of the number of values on which the average is based . In general , differences among positions exceeding the test level values are ...
... average , which is obtained by dividing the calculated standard deviation by the square root of the number of values on which the average is based . In general , differences among positions exceeding the test level values are ...
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