When dealing with sample data,we can determine the existence of main effects and interactions in populations by mere visual inspection of sample means or slopes of lines in a graph.

Question

Quizplus · Accepted Answer

Mere visual inspection of sample data may suggest the presence of main effects and interactions, but it cannot definitively determine their existence in the population. Statistical tests and analyses are necessary to confirm the significance of these effects.

When Dealing with Sample Data,we Can Determine the Existence of Main