Since the distributions of dog weight within each of the groups (shown in blue) has a relatively large variance, and since the means are very similar across groups, grouping dogs by these characteristics does not produce an effective way to explain the variation in dog weights: knowing which group a dog is in doesn't allow us to predict its weight much better than simply knowing the dog is in a dog show.
sˈɪns ðə dˌɪstɹɪbjˈuːʃənz ʌv dˈɑːɡ wˈeɪt wɪðˌɪn ˈiːtʃ əv ðə ɡɹˈuːps ʃˈoʊn ɪn blˈuː hɐz ɐ ɹˈɛlətˌɪvli lˈɑːɹdʒ vˈɛɹiəns, ænd sˈɪns ðə mˈiːnz ɑːɹ vˈɛɹi sˈɪmɪlɚɹ əkɹˌɑːs ɡɹˈuːps, ɡɹˈuːpɪŋ dˈɑːɡz baɪ ðiːz kˌæɹɪktɚɹˈɪstɪks dʌznˌɑːt pɹədˈuːs ɐn ɪfˈɛktɪv wˈeɪ tʊ ɛksplˈeɪn ðə vˌɛɹɪˈeɪʃən ɪn dˈɑːɡ wˈeɪts: nˈoʊɪŋ wˌɪtʃ ɡɹˈuːp ɐ dˈɑːɡ ɪz ɪn dˈʌzənt ɐlˈaʊ ˌʌs tə pɹɪdˈɪkt ɪts wˈeɪt mˈʌtʃ bˈɛɾɚ ðɐn sˈɪmpli nˈoʊɪŋ ðə dˈɑːɡ ɪz ɪn ɐ dˈɑːɡ ʃˈoʊ.