A researcher reports that the effectiveness of a new marketing campaign significantly increased sales compared with the previous campaign strategy,t(49)= 2.562,p

Question

A researcher reports that the effectiveness of a new marketing campaign significantly increased sales compared with the previous campaign strategy,t(49)= 2.562,p < .05.Use $\eta$² to interpret the effect size for this result. A) 12% of the variability in marketing effectiveness can be accounted for by the new marketing strategy. B) 12% of the standard error can be accounted for by the effectiveness of the marketing strategy. C) Marketing effectiveness shifted 0.12 standard deviations above the mean in the population. D) 12% of the variability in marketing effectiveness can be accounted for by the new marketing strategy and 12% of the standard error can be accounted for by the effectiveness of the marketing strategy.

Quizplus · Accepted Answer

The correct interpretation of the effect size, represented by "F1F1F1S1uf068F1F1F10²," is that 12% of the variability in marketing effectiveness can be accounted for by the new marketing strategy. This is typically how effect size is understood in the context of statistical analysis, indicating the proportion of variance in the dependent variable that is predictable from the independent variable.

A Researcher Reports That the Effectiveness of a New Marketing η\etaη

A Researcher Reports That the Effectiveness of a New Marketing $\eta$