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The image shows a bar chart detailing the distribution of frequencies (שכיחות) of time (ימי נביטה, "germination days") for some experimental data, followed by a question asking for the "average germination time" (מהו זמן הנביטה הממוצע של זרעי השעועית).

To find the average germination time, we need to compute the weighted average using the data from the chart. Here's the data extracted from the chart:
- 55 occurrences for 3 days,
- 30 occurrences for 4 days,
- 31 occurrences for 5 days,
- 18 occurrences for 6 days,
- 11 occurrences for 7 days,
- 5 occurrences for 10 days.

Let's now calculate the average germination time.The average germination time (זמן הנביטה הממוצע) for the seeds based on the data is 4.5 days.

Do you need further explanation or have any other questions? Here are some related questions:

1. How do you calculate a weighted average in general?
2. What factors could affect the germination time of seeds in this type of experiment?
3. How does the distribution of data affect the average?
4. Can the median germination time differ significantly from the mean?
5. What are some common types of distributions in biological experiments?

**Tip**: In statistics, the weighted average gives more importance to data points with higher frequencies or weights.

מהו זמן הנביטה הממוצע של זרעי השעועית?

Learn how to calculate the average germination time of bean seeds using a weighted average based on experimental data. This problem covers key statistical concepts such as frequency distribution and the weighted average formula, with step-by-step calculations for finding the mean germination time. Suitable for students in Grades 7-9.

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