Revisão de conteúdos para prova final
Autor: Prof. Manoel | Publicado: 2011-12-16T00:36:00-08:00






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5) Uma pesquisa de opinião foi realizada para avaliar os
níveis de audiência de alguns canais de televisão, entre 20&nbsp; h e 21 h, durante uma determinada noite. Os
resultados obtidos estão representados no gráfico de barras a seguir:


 
 
  
  
  
  
  
  
  
  
  
  
  
  
 
 
 

 
 








&nbsp;


&nbsp;


I. O numero de residências atingidas nessa pesquisa foi,
aproximadamente, de: 

a) 100&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b) 150&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c) 200&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; d) 250&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; e) 300

II. A porcentagem de entrevistados que declararam estar
assistindo à TvB é aproximadamente igual a:

a) 16%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
b) 22%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c) 20%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; d) 27%&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; e) 30%

6) Um dado foi lançado 50 vezes e foram
registrados os seguintes resultados

5&nbsp;&nbsp; 4&nbsp;&nbsp;
6&nbsp;&nbsp; 1&nbsp;&nbsp; 2&nbsp;&nbsp;
5&nbsp;&nbsp; 3&nbsp;&nbsp; 1&nbsp;&nbsp;
3&nbsp;&nbsp; 3&nbsp; 4&nbsp;&nbsp;
4&nbsp;&nbsp; 1&nbsp;&nbsp; 5&nbsp;&nbsp;
5&nbsp;&nbsp; 6&nbsp;&nbsp; 1&nbsp;&nbsp;
2&nbsp;&nbsp; 5&nbsp;&nbsp; 1&nbsp;
3&nbsp;&nbsp; 4&nbsp;&nbsp; 5&nbsp;&nbsp;
1&nbsp;&nbsp; 1&nbsp;&nbsp;&nbsp;&nbsp; 

6&nbsp;&nbsp; 6&nbsp;&nbsp;
2&nbsp;&nbsp; 1&nbsp;&nbsp; 1&nbsp;
4&nbsp;&nbsp; 4&nbsp;&nbsp; 4&nbsp;&nbsp;
3&nbsp;&nbsp; 4&nbsp;&nbsp; 3&nbsp;&nbsp;
2&nbsp;&nbsp; 2&nbsp;&nbsp; 2&nbsp;&nbsp;
3&nbsp;&nbsp; 6&nbsp;&nbsp; 6&nbsp;&nbsp;
3&nbsp;&nbsp; 2&nbsp;&nbsp; 4&nbsp;&nbsp;
2&nbsp;&nbsp; 6&nbsp;&nbsp; 6&nbsp;&nbsp;
2&nbsp;&nbsp; 1



Construa
uma tabela de distribuição de frequência sem intervalo de classe e determine:

a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
As frequências absoluta
e relativa.

b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
A média, a mediana e a
moda.





7) Em cada série de dados abaixo
calcule a media a moda e a mediana.

a) 10, 20, 40,
50, 70, 80

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b) 82, 86, 88, 84, 91, 93

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c) &nbsp;73, 73, 75, 75,&nbsp; 75, 75, &nbsp;75, 77, 77, 77, 79, 79, 81

&nbsp;&nbsp;&nbsp;