wˈeɪt ænd hˈaɪt pɚsˈɛntaɪlz ɑːɹ dɪtˈɜːmɪnd baɪ ɡɹˈoʊθ tʃˈɑːɹts ænd bˈɑːdi mˈæs ˈɪndɛks tʃˈɑːɹts tə kəmpˈɛɹ ɐ tʃˈaɪldz mˈɛʒɚmənts wɪð ðoʊz ʌv ˈʌðɚ tʃˈɪldɹən ɪnðə sˈeɪm ˈeɪdʒ ɡɹˈuːp.
Weight and height percentiles are determined by growth charts and body mass index charts to compare a child's measurements with those of other children in the same age group.