Which statement would be inappropriate to use when interpreting the significance level of a variable?

A) The difference was found to be significant at the p < .001 level.
B) The difference was found to be significant at the p < .001 level, making it highly significant.
C) The difference was found to not be significant with a p value of p > .05.
D) The difference was found to be significant at the p <.05 level.

Significance Level

The significance level, often denoted by alpha (α), is the threshold chosen by the researcher to determine the statistical significance of an outcome; it's the probability of rejecting the null hypothesis when it is true.

Highly Significant

A term used in statistical analysis to denote results that vastly exceed the threshold for statistical significance, often suggesting a strong effect or association.

p < .001

p < .001 indicates that the probability of the observed data, or something more extreme, assuming the null hypothesis is true, is less than 0.1%, which is considered highly statistically significant.