In an automated chemical coating process, the speed with which objects on a conveyor belt are passed through a chemical spray (belt speed), the amount of chemical sprayed (spray volume), and the brand of chemical used (brand) are factors that may affect the uniformity of the coating applied. A replicated 23 experiment was conducted in an effort to increase the coating uniformity. In the following table, higher values of the response variable are associated with higher surface uniformity:

Analyze this data and state your conclusions?

Surface Uniformity Spray Bt Repli- Repli cation cation 9 Run Volume Speed Brand1 Fand ation Kepli 40 36 25 28 30 32 50 48 45 43 25 30 30 29 52 49