minor inefficency in the statistics module

[lbaumbauer]

Bug report

Bug description:

cpython/Lib/statistics.py

Line 1217 in 22a6c51

j = i * m // n # rescale i to m/n

in the quantiles computation 'i * m' should be reused not recomputed ( #150326) changes not added here)

            i_m = i * m
            j =  i_m // n                               # rescale i to m/n
            j = 1 if j < 1 else ld-1 if j > ld-1 else j  # clamp to 1 .. ld-1
            delta = i_m - j*n 

CPython versions tested on:

3.13

Operating systems tested on:

No response

[picnixz]

If you believe there is a real improvement this should be backed by benchmarks. I do not think this matters though.