Matemática discreta Exemplos

$\begin{array}{c} x & y \\ 799.5 - 899.5 & 2 \\ 899.5 - 999.5 & 8 \\ 999.5 - 1099.5 & 21 \\ 1099.5 - 1199.5 & 10 \\ 1199.5 - 1299.5 & 9 \end{array}$

Etapa 1

O limite inferior de cada classe é o menor valor dessa classe. Por outro lado, o limite superior de todas as classes é o maior valor dessa classe.

$\begin{array}{c} x & y & Lower Limits & Upper Limits \\ 799.5 - 899.5 & 2 & 799.5 & 899.5 \\ 899.5 - 999.5 & 8 & 899.5 & 999.5 \\ 999.5 - 1099.5 & 21 & 999.5 & 1099.5 \\ 1099.5 - 1199.5 & 10 & 1099.5 & 1199.5 \\ 1199.5 - 1299.5 & 9 & 1199.5 & 1299.5 \end{array}$

Etapa 2

O ponto médio da classe é o limite inferior da classe mais o limite superior da classe dividido por $2$ .

$\begin{array}{c} x & y & Lower Limits & Upper Limits & Midpoint (M) \\ 799.5 - 899.5 & 2 & 799.5 & 899.5 & \frac{799.5 + 899.5}{2} \\ 899.5 - 999.5 & 8 & 899.5 & 999.5 & \frac{899.5 + 999.5}{2} \\ 999.5 - 1099.5 & 21 & 999.5 & 1099.5 & \frac{999.5 + 1099.5}{2} \\ 1099.5 - 1199.5 & 10 & 1099.5 & 1199.5 & \frac{1099.5 + 1199.5}{2} \\ 1199.5 - 1299.5 & 9 & 1199.5 & 1299.5 & \frac{1199.5 + 1299.5}{2} \end{array}$

Etapa 3

Simplifique toda a coluna do ponto médio.

$\begin{array}{c} x & y & Lower Limits & Upper Limits & Midpoint (M) \\ 799.5 - 899.5 & 2 & 799.5 & 899.5 & 849.5 \\ 899.5 - 999.5 & 8 & 899.5 & 999.5 & 949.5 \\ 999.5 - 1099.5 & 21 & 999.5 & 1099.5 & 1049.5 \\ 1099.5 - 1199.5 & 10 & 1099.5 & 1199.5 & 1149.5 \\ 1199.5 - 1299.5 & 9 & 1199.5 & 1299.5 & 1249.5 \end{array}$

Etapa 4

Adicione a coluna de pontos médios à tabela original.

$\begin{array}{c} x & y & Midpoint (M) \\ 799.5 - 899.5 & 2 & 849.5 \\ 899.5 - 999.5 & 8 & 949.5 \\ 999.5 - 1099.5 & 21 & 1049.5 \\ 1099.5 - 1199.5 & 10 & 1149.5 \\ 1199.5 - 1299.5 & 9 & 1249.5 \end{array}$