Una agencia de viajes que quiere planificar su oferta para las vacaciones de verano realiza una encuesta en el estado de Veracruz. Identifica las variables, su tipo, así como su escala de medición, necesarias para recoger la información requerida para el estudio.

What's for breakfast? all people who ate at a certain restaurant were surveyed as to what they ordered on a particular sunday morning. 40 ate eggs 42 ate sausage 32 ate pancakes 13 ate sausage and eggs 15 ate pancakes and sausage 11 ate eggs and pancakes 6 ate all three items 3 people didn't eat any of the items how many people ate only pancakes? how many people ate at the resturant that morning? how many people didn't eat eggs?