In a study comparing two groups, the treatment group ($n = 50$) has a mean score of $34.32$ ($SD = 10.45$) and the control group ($n = 50$) has a mean score of $21.45$ ($SD = 9.22$), resulting in an extremely strong Cohen's $d$ of $1.31$. These descriptive statistics alone clearly indicate that the treatment was effective, although inferential statistics (like a $t$-test) are still required for a formal research report.