Letters that make stratified sampling
s, a, d, e, f, g, l, n, p, m, r, t, i are letters that make 'stratified sampling'
Words within stratified sampling
IED, SAM, AM, IE, ti, MP, SA, Lin, at, ng, amp, ED, stratified, ratified, li, ie, in, sampling, rat, ling, RA, IN, Ra, Am, At, In, Li, Ti, AMP are words within 'stratified sampling'