Hi,
I would like to select random sample from my data set on following conditions
  • Two sites site A=850and site B=900
age criteria for each site is given below
  • **1• 20% 0-<2y
  • **2• 20% 2-<5y
  • **3• 20% 5-<10y
  • **4• 20% 10-<15y
  • **5• 20% 15-<25y