Road to health card has 2 reference points, which are -

Ans. is 'b' i.e., 50th percentile for boys and 3rd percentile for girls Reference curves 1. Upper reference curve 50th percentile for boys 2. Lower reference curve 3rd percentile for girls o The 50th percentile normally corresponds to the reference median, i.e. it gives the value of 50th child in a group of 100 when they are arranged in ascending or descending order and where equal number of children will have measurments smaller or larger than the 50th value. o When we say 3rd percentile, it means that only 3% (3 in each 100) children weighed had values which fall below that line. o The 3rd percentile corresponds approximately to 2 standard detion below the median of the weight-for-age reference valve.