Daily income (in Rs ) of 10 families (of two colonies) as found in a survey is listed below. Find the mean daily income of the families in each case. Colony A: 335, 457, 507, 234, 365, 410, 258, 378,552,424 Colony B: 135, 357, 402, 177, 256, 300, 185, 278, 450, 235 235
Answers
Daily mean income of Colony A
Mean = sum of all observations
—————————————
total no. of observations
= 335+457+507+234+365+410+258+378+552+424
————————————————————————–——
10
= 3920
———
10
= 392 (income mean of Colony A)
Daily mean income of Colony B
Mean = sum of all observations
Mean = sum of all observations —————————————
Mean = sum of all observations ————————————— total no. of observations
= 135+357+402+177+256+300+185+278+450+235+235
= 3010
———
10
= 301
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