“统计学上”常见的英文表达是 "statistically" 。例如:
Statistically, there is a significant difference between the two groups.(从统计学上讲,这两组之间存在显著差异。 )
此外,根据具体语境,也可以使用 "in statistical terms" 来表达类似意思。例如:
In statistical terms, the result is not very meaningful.(从统计学角度来说,这个结果意义不大。 )