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The table shown provides data for weight intervals (Berat Badan), class midpoints (\( x_i \)), and frequencies (Frekuensi). Here's the information:

| Berat Badan (Weight Interval) | \( x_i \) (Midpoint) | Frekuensi (Frequency) |
|-------------------------------|----------------------|-----------------------|
| 47 – 49                        | 48                   | 3                     |
| 50 – 52                        | 51                   | 6                     |
| 53 – 55                        | 54                   | 8                     |
| 56 – 58                        | 57                   | 7                     |
| 59 – 61                        | 60                   | 6                     |

To calculate the mean, we use the formula for the mean of grouped dataThe table shown provides data for weight intervals (Berat Badan), class midpoints (\( x_i \)), and frequencies (Frekuensi). Here's the information:

| Berat Badan (Weight Interval) | \( x_i \) (Midpoint) | Frekuensi (Frequency) |
|-------------------------------|----------------------|-----------------------|
| 47 – 49                        | 48                   | 3                     |
| 50 – 52                        | 51                   | 6                     |
| 53 – 55                        | 54                   | 8                     |
| 56 – 58                        | 57                   | 7                     |
| 59 – 61                        | 60                   | 6                     |

To calculate the mean, we use the formula for the mean of grouped 

\[
\text{Mean} = \frac{\sum (x_i \cdot f_i)}{\sum f_i}
\]

Where:
- \( x_i \) = class midpoint
- \( f_i \) = frequency for each class

### Step 1: Calculate \( x_i \cdot f_i \)
- For \( x_i = 48 \) and \( f_i = 3 \), \( x_i \cdot f_i = 48 \times 3 = 144 \)
- For \( x_i = 51 \) and \( f_i = 6 \), \( x_i \cdot f_i = 51 \times 6 = 306 \)
- For \( x_i = 54 \) and \( f_i = 8 \), \( x_i \cdot f_i = 54 \times 8 = 432 \)
- For \( x_i = 57 \) and \( f_i = 7 \), \( x_i \cdot f_i = 57 \times 7 = 399 \)
- For \(

Calculate the mean based on the weight intervals and frequencies provided in the table.

Learn how to calculate the mean for grouped data using weight intervals and corresponding frequencies. The table includes class midpoints and frequencies, helping students understand statistical concepts at the high school level.

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