Matematika Berhingga Contoh

\begin{array}{c} Kelas & Frekuensi \\ 19.55 - 21.82 & 3 \\ 21.83 - 24.1 & 5 \\ 24.11 - 26.38 & 9 \\ 26.39 - 28.66 & 6 \\ 28.67 - 30.94 & 2 \end{array}

$\begin{array}{c} Kelas & Frekuensi \\ 19.55 - 21.82 & 3 \\ 21.83 - 24.1 & 5 \\ 24.11 - 26.38 & 9 \\ 26.39 - 28.66 & 6 \\ 28.67 - 30.94 & 2 \end{array}$

Langkah 1

Batas bawah untuk setiap kelas adalah nilai terkecil dalam kelas itu. Di samping itu, batas atas untuk setiap kelas merupakan nilai terbesar dalam kelas itu.

\begin{array}{c} Class & Frequency (f) & Lower Limits & Upper Limits \\ 19.55 - 21.82 & 3 & 19.55 & 21.82 \\ 21.83 - 24.1 & 5 & 21.83 & 24.1 \\ 24.11 - 26.38 & 9 & 24.11 & 26.38 \\ 26.39 - 28.66 & 6 & 26.39 & 28.66 \\ 28.67 - 30.94 & 2 & 28.67 & 30.94 \end{array}

$\begin{array}{c} Class & Frequency (f) & Lower Limits & Upper Limits \\ 19.55 - 21.82 & 3 & 19.55 & 21.82 \\ 21.83 - 24.1 & 5 & 21.83 & 24.1 \\ 24.11 - 26.38 & 9 & 24.11 & 26.38 \\ 26.39 - 28.66 & 6 & 26.39 & 28.66 \\ 28.67 - 30.94 & 2 & 28.67 & 30.94 \end{array}$

Langkah 2

Titik tengah kelas adalah batas kelas bawah ditambah batas kelas atas, dibagi dengan

2

$2$ .

\begin{array}{c} Class & Frequency (f) & Lower Limits & Upper Limits & Midpoint (M) \\ 19.55 - 21.82 & 3 & 19.55 & 21.82 & \frac{19.55 + 21.82}{2} \\ 21.83 - 24.1 & 5 & 21.83 & 24.1 & \frac{21.83 + 24.1}{2} \\ 24.11 - 26.38 & 9 & 24.11 & 26.38 & \frac{24.11 + 26.38}{2} \\ 26.39 - 28.66 & 6 & 26.39 & 28.66 & \frac{26.39 + 28.66}{2} \\ 28.67 - 30.94 & 2 & 28.67 & 30.94 & \frac{28.67 + 30.94}{2} \end{array}

$\begin{array}{c} Class & Frequency (f) & Lower Limits & Upper Limits & Midpoint (M) \\ 19.55 - 21.82 & 3 & 19.55 & 21.82 & \frac{19.55 + 21.82}{2} \\ 21.83 - 24.1 & 5 & 21.83 & 24.1 & \frac{21.83 + 24.1}{2} \\ 24.11 - 26.38 & 9 & 24.11 & 26.38 & \frac{24.11 + 26.38}{2} \\ 26.39 - 28.66 & 6 & 26.39 & 28.66 & \frac{26.39 + 28.66}{2} \\ 28.67 - 30.94 & 2 & 28.67 & 30.94 & \frac{28.67 + 30.94}{2} \end{array}$

Langkah 3

Sederhanakan semua kolom titik tengah.

\begin{array}{c} Class & Frequency (f) & Lower Limits & Upper Limits & Midpoint (M) \\ 19.55 - 21.82 & 3 & 19.55 & 21.82 & 20.685 \\ 21.83 - 24.1 & 5 & 21.83 & 24.1 & 22.965 \\ 24.11 - 26.38 & 9 & 24.11 & 26.38 & 25.245 \\ 26.39 - 28.66 & 6 & 26.39 & 28.66 & 27.525 \\ 28.67 - 30.94 & 2 & 28.67 & 30.94 & 29.805 \end{array}

$\begin{array}{c} Class & Frequency (f) & Lower Limits & Upper Limits & Midpoint (M) \\ 19.55 - 21.82 & 3 & 19.55 & 21.82 & 20.685 \\ 21.83 - 24.1 & 5 & 21.83 & 24.1 & 22.965 \\ 24.11 - 26.38 & 9 & 24.11 & 26.38 & 25.245 \\ 26.39 - 28.66 & 6 & 26.39 & 28.66 & 27.525 \\ 28.67 - 30.94 & 2 & 28.67 & 30.94 & 29.805 \end{array}$

Langkah 4

Tambahkan kolom titik tengah ke tabel asli.

\begin{array}{c} Class & Frequency (f) & Midpoint (M) \\ 19.55 - 21.82 & 3 & 20.685 \\ 21.83 - 24.1 & 5 & 22.965 \\ 24.11 - 26.38 & 9 & 25.245 \\ 26.39 - 28.66 & 6 & 27.525 \\ 28.67 - 30.94 & 2 & 29.805 \end{array}

$\begin{array}{c} Class & Frequency (f) & Midpoint (M) \\ 19.55 - 21.82 & 3 & 20.685 \\ 21.83 - 24.1 & 5 & 22.965 \\ 24.11 - 26.38 & 9 & 25.245 \\ 26.39 - 28.66 & 6 & 27.525 \\ 28.67 - 30.94 & 2 & 29.805 \end{array}$

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