coalash: Coal ash in mining samples
In sm: Smoothing Methods for Nonparametric Regression and Density Estimation
coalash R Documentation
Coal ash in mining samples
Description
These data record the percentage of coal ash found in mining samples
originally reported by Gomez and Hazen (1970) and subsequently used
by Cressie (1993).
The variables are:
East a code for east-west direction
North a code for north-south direction
Percent the percentage of coalash
Cressie, N. (1993). Statistics for Spatial Data, revised edition. New York: Wiley.
Gomez, M. and Hazen, K. (1970). Evaluating sulfur and ash distribution in coal seams by statistical response surface regression analysis. Report RI 7377, U.S. Bureau of Mines, Washington, D. C.
sm documentation built on July 4, 2022, 5:06 p.m.
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| coalash | R Documentation |
Coal ash in mining samples
Description
These data record the percentage of coal ash found in mining samples originally reported by Gomez and Hazen (1970) and subsequently used by Cressie (1993).
The variables are:
East | a code for east-west direction |
North | a code for north-south direction |
Percent | the percentage of coalash |
Cressie, N. (1993). Statistics for Spatial Data, revised edition. New York: Wiley.
Gomez, M. and Hazen, K. (1970). Evaluating sulfur and ash distribution in coal seams by statistical response surface regression analysis. Report RI 7377, U.S. Bureau of Mines, Washington, D. C.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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