Environmental scientists gather a sample of 2016 chemical spill data from cities in six countries. This table shows information from each sample.

-In order to properly conduct an ANOVA test, which of the following should be equal across the five countries?
A) number of cities in each population
B) population average in chemical spills
C) sample average in chemical spills
D) population variance in chemical spills

Question

Environmental scientists gather a sample of 2016 chemical spill data from cities in six countries. This table shows information from each sample.
 
-In order to properly conduct an ANOVA test, which of the following should be equal across the five countries?
A) number of cities in each population 
B) population average in chemical spills 
C) sample average in chemical spills 
D) population variance in chemical spills

Quizplus · Accepted Answer

ANOVA assumes that the populations being compared have equal variances, which is known as the homogeneity of variance assumption.

Environmental Scientists Gather a Sample of 2016 Chemical Spill Data