平方平均數

root mean square (RMS) / quadratic root

surname Ping

flat / level / equal / to tie (make the same score) / to draw (score) / calm / peaceful / abbr. for 平聲|平声[ping2 sheng1]

square (as in square foot, square mile, square root)

surname Fang

square / power or involution (math.) / upright / honest / fair and square / direction / side / party (to a contract, dispute etc) / place / method / prescription (medicine) / just when / only or just / classifier for square things / abbr. for square or cubic meter

average / on average / evenly / in equal proportions

average; on average / evenly; in equal proportions

equal / even / all / uniform

mean (statistics)

to count / to count as / to regard as / to enumerate (sb's shortcomings)

number / figure / several / CL:個|个[ge4]

frequently / repeatedly