https://file.aiquickdraw.com/mathbot/file/1728267764729rdzkr9in.jpg

Let's go through the questions one by one from the image you provided. The exercise seems to focus on statistics, specifically dealing with mean (rata-rata), median, and mode (modus).

### Question 1: 
You are asked to determine the mean, median, and mode for several data sets:
- **a.** \( 8, 19, 12, 16, 18, 20, 19 \)
- **b.** \( 10, 12, 17, 14, 4, 14, 6, 8, 9 \)
- **c.** \( 6, 9, 2, 5, 3, 12, 14 \)
- **d.** Calculate the mean for age group data for Iwan and others (this requires more specific info about the ages).
  
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Learn how to solve various statistics problems related to mean, median, and mode, including calculating averages, finding middle values, and determining the most frequent numbers. Suitable for students in Grades 7-9.

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