A researcher is studying differences in four types of medications and finds a statistically significant F-ratio. What does this tell the researcher?
If a researcher finds a statistically significant F-ratio, what does it indicate about the variation?
a) The variation is due to sampling error alone.
b) The variation is due to only the independent variable.
c) The variation is due to the independent variable in addition to the sampling error.
d) The variation is due to only within-group differences.