the value between ist pentile and 4th pentile includes
Pentile divides the whole set of values into 5 equal pas Each with 20% P1= 20%:80% P2= 40%:60% P3= 60%:40% P4= 80%:20% So, between P1 and P4 : 80%-20% = 60%
20%
40%
60%
80%
Biostatistics