निम्न आँकड़ों के लिए बहुलक ज्ञात कीजिए |
`{:(`मासिक खपत (इकाइयों में),उपभोक्ताओं की संख्या`),(" "65-85," 4"),(" "85-105," 5"),(" "105-125," 13"),(" "125-145," 20"),(" "145-165," 14"),(" "165-185," 8"),(" "185-205," 4"):}`