Question

R2.70: Which of the following is a group of experimental runs conducted under relatively homogenous conditions?

A. Interaction

B. Response variable

C. Experimental error

D. Block

Answer 1

Answer is D) A block is a categorical variable that identifies groups of experimental runs conducted under relatively homogeneous conditions.

We'll see what other options mean:

A. An interaction effect is the simultaneous effect of two or more independent variables on at least one dependent variable in which their joint effect is significantly greater (or significantly less) than the sum of the parts.

B. A Response Variable (or dependent variable) is that variable whose variation depends on other variables. The response variable is often related to the independent variable, sometimes denoted as the explanatory variable.

C. Experimental error is the difference between a measurement and the true value or between two measured values.