Question

2. The following frequency distribution gives the monthly consumption of electricity of 68 consumers of a locality. Find the median. ( 3) Monthly Number Consu- of mption consumers (in units) 65 - 85 4 85 - 105 5 105 - 125 13 125 - 145 20 145 - 165 14 165 - 185 8 185 - 205 4 ​

Answer 1

Answer:

C.I xi fi fixi c.f 65−85 75 4 300 4 85−105 95 5 475 9 105−125 115 13 1495 22 125−145 135 20 2700 42 145−165 155 14 2170 56 165−185 175 8 1400 64 185−205 195 4 780 68   ∑fi=68 ∑fixi=9320  ⇒  Mean=∑fi∑fixi=689320=

Answer 2

Step-by-step explanation:

C.I xi fi fixi c.f 65-85 75 4 300 4 85-105 9 5 5 475 9 105-125 115 13 1495 22 125-145 135 20 2700 42 145-165 155 14 2170 56 1 65-185 175 8 1400 64 185-205 195 4 780 68 [fi-68 [fixi=9320 ⇒ Mean=[fi[fixi= 689320=