https://file.aiquickdraw.com/mathbot/file/1727366374463vgs7v42i.jpg

The image contains a frequency distribution table showing the weights of 30 PON participants and asks for the average weight (mean) of the participants. Let's calculate the mean step-by-step.

Here’s the approach:

1. **Find the midpoints** of each weight range.
2. **Multiply each midpoint by its corresponding frequency**.
3. **Sum** all the results.
4. **Divide by the total number of participants** to get the mean.

Now, I will calculate the mean weight for you.The average (mean) weight of the 30 PON participants is approximately **69.83 kg**. 

This corresponds to option **C** in the question.

Would you like more details on the calculation or have any other questions? Here are some related questions:

1. What is the weighted mean and how does it differ from the arithmetic mean?
2. How do you calculate the median weight from the same data set?
3. What is the variance and standard deviation for this data set?
4. How would the mean change if we added more weight categories?
5. How can this method be used in real-life scenarios such as health statistics?

**Tip:** Always double-check your calculations when dealing with grouped data to ensure accuracy.

Rata-rata berat badan peserta PON adalah ….

Learn how to calculate the average weight of 30 PON participants using a frequency distribution table. This example shows step-by-step calculations using midpoints and frequencies, applying the weighted mean formula. Suitable for students in Grades 10-12.

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