Written Explanation of the Data:

Question

A written explanation briefly analyzes the data you collected in your table and is displayed visually in your table. It should be about one paragraph and summarize the data shown in the table and graph. It can include trends you noticed in the data, if any, but it should not be a conclusion….

Model Question: Does weight affect the speed of a pendulum?
Model Written Results Explanation Example:
• The mean (average) time for 10 swings was approximately the same for all the weights. The longest time was with 2 weights at 28 seconds, and the shortest time was with 5 weights at 24 seconds. However, since these times are close to each other and so are the other times, I would say the trend is that nothing really changes. When I look at the median data, the results are about the same - no real difference exists.

Here is the details needed to writing the paragraph:

QUESTION:
What effect does adding soap to water have on the number of drops that can be placed on a penny?

Trial 1: Tap Water 42 and soapy Water 30

Trial 2: Tap Water 43 and soapy Water 29

Trial 3: Tap Water 42 and soapy Water 31

Average mean: Tap Water 42.333 and soapy Water 30

Answer 1

The data collected from the experiment show that when soap is added to water, the number of drops that can be placed on a penny decreases compared to tap water alone. The average mean number of drops for tap water was 42.333, while the average mean for soapy water was only 30. This indicates that the addition of soap had a significant impact on the surface tension of the water, making it more difficult for water drops to stay on the penny. Each trial consistently showed fewer drops for soapy water compared to tap water, suggesting a clear trend in the data.