• BANDI GURAVAIAH
• R.Md.Shareef
• O.V.Rajasekharam
• G.V.S.R.Anjaneyulu

Hader and Park (1978) introduced Slope Rotatable Central Composite Designs (SRCCD). Park and Kim (1992) suggested a measure of slope rotatability for second order response surface designs. Jang and Park (1993) suggested a measure and graphical method for evaluating slope rotatability in response surface designs. All these are SOSRD with five or three levels for each factor. Anjaneyulu et al (2005) constructed some new second order rotatable designs. As SOSRD with four levels for each of the factor are sometimes necessary, there is a need to investigate methods for constructing such designs. In this paper, construction of four level second order slope rotatable designs using μ-resolvable balance incomplete block designs is suggested with an example.

Second Order Slope Rotatable Design; Balanced Incomplete Block Design; Response Surface Methodology.

"Construction of Four Level Second Order Slope Rotatable Designs ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 3, page no.730-735, March-2021, Available :http://www.jetir.org/papers/JETIR2103099.pdf

"Construction of Four Level Second Order Slope Rotatable Designs ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 3, page no. pp730-735, March-2021, Available at : http://www.jetir.org/papers/JETIR2103099.pdf