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አማርኛ Kowane lissafin kudin shiga shi ne kimanta wanda amibi shi ya karu da adadin abubuwan da aka lissafi. Wasanni biyar na BTTS ba su gaya maka abin yawa ba; hamsin suna gaya maka wani abu; jari biyar suna tsintsiha har tsaye. Standard error yana raguwa tare da tushen murabba'i na n — yi iji ikon bayani hudu don rage jita ɗaya.
Tatshin aiki: kafin ka yi aiki da kowane yawa ('sun buga over 2.5 a 8 daga 10'), tambaya nace n shine menene da kuma base rate ya ce. Yawancin 'trends' da aka lallasa wa dan kudin shiga su ne gidaje-gida biyar na baba wanda aka saba zai kasua kusa da 50%.
Yawa 60% over-2.5 daga wasanni 10 yana da standard error na ±15.5% — yawa gaskiya itata zai iya zama daga 45% zuwa 75%, wanda ya bugi 'shiga over' da 'shiga under'. Kamannin 60% daga wasanni 200 (±3.5%) a zahiri shi ne bayani.