Height TV wrong calculations??? wrong wrong i tell'ya?

I eman they just never give the right height i mena some people look so.. tall and suddenly they're 5'7 5'8 thats just below normal xome on am i the only one who could see this so I'm 5'4 but some might sya I'm like what 4'11 5'0 sheesh dont they like measure the height they just guess or estimate