doubts of statistics paper 3

To test equality of proportions of more than two populations which of the following techniques are used: 1) interval estimate 2) analysis of variance 3) chi-square test 4) none of the above * I think it should be analysis of variance but my book has answer none of the above ** Kiran pg45 q13

SSC CGL 2018 JSO STATISTICS---https://t.me/joinchat/Ec7LWBN3Ga6yBSklAm1-2w Guys preparing can have a proper common platform to discuss problems of complex stats.