Correlation and Regression as applied in Green Concrete Research
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Correlation and
regression were used as statistical tools to analyse the mechanical and
durability properties of green concrete. The use of these analytical
tools showed that the degree of relationship that exists between a green
concrete property (for example compressive strength or water absorption
or resistance to sulphate attack) and percentage replacement of cement
with a civil engineering material can be established using correlation;
the nature and extent of the relationship can be known using regression;
and the green concrete property analysed using regression can be
predicted with the regression equation. The results of correlation
analysis showed that Pearson product-moment is a better method for
analysing green concrete properties when compared with Spearman’s
correlation coefficient, since Pearson’s method takes cognizance of the
actual data values unlike Spearman’s use of data positions. The results
of regression analysis in section 3.1 and 3.2 have also shown that, for
data whose trendline is polynomial in shape with the highest power of
its assumed equation more than two (that is higher than quadratic
equation), it is better to analyse such data using least square
regression line method for linear relationship than least square
regression line method for non-linear relationship
The use of Microsoft Excel aids the simplification of the
calculation in regards to the nonlinear regression analysis as it
reduces the computational time and effort needed to carry out the
analysis. So it is recommended for use in carrying out nonlinear
regression analysis in relation to green concrete research.
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Smith, A (2020). Correlation and Regression as applied in Green Concrete Research. Afribary.com: Retrieved October 27, 2020, from https://afribary.com/works/smith-and-sam-correlation-and-regression-as-applied-in-green-concrete-research978-620-2-78711-6
Abutu Simon John, Smith. "Correlation and Regression as applied in Green Concrete Research" Afribary.com. Afribary.com, 19 Aug. 2020, https://afribary.com/works/smith-and-sam-correlation-and-regression-as-applied-in-green-concrete-research978-620-2-78711-6 . Accessed 27 Oct. 2020.
Abutu Simon John, Smith. "Correlation and Regression as applied in Green Concrete Research". Afribary.com, Afribary.com, 19 Aug. 2020. Web. 27 Oct. 2020. < https://afribary.com/works/smith-and-sam-correlation-and-regression-as-applied-in-green-concrete-research978-620-2-78711-6 >.
Abutu Simon John, Smith. "Correlation and Regression as applied in Green Concrete Research" Afribary.com (2020). Accessed October 27, 2020. https://afribary.com/works/smith-and-sam-correlation-and-regression-as-applied-in-green-concrete-research978-620-2-78711-6