A researcher wanted to examine if soil type had any effects on the heights of daylilies. Ten bulbs of daylilies were planted in each of the three different types of soil. The thickness of the soil X) was also measured for each pot. After three months, the heights of the plants
Y) were measured. Below are the group means of the study.

-If there is no correlation between X and Y, the MS_with for ANCOVA as compared to that for ANOVA will be

Question

A researcher wanted to examine if soil type had any effects on the heights of daylilies. Ten bulbs of daylilies were planted in each of the three different types of soil. The thickness of the soil X) was also measured for each pot. After three months, the heights of the plants
Y) were measured. Below are the group means of the study.

-If there is no correlation between X and Y, the MS_with for ANCOVA as compared to that for ANOVA will be

Quizplus · Accepted Answer

If X and Y are not correlated, SS_with will be the same, but with the loss of one df_with, MS_with will become greater.)

A Researcher Wanted to Examine If Soil Type Had Any