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An experiment was designed to determine the length of exposure to direct sunlight necessary for a specific plant species to produce flowers. The student collected the following data:

- 0 hours, 0% with flowers
- 1 hour, 0% with flowers
- 3 hours, 0% with flowers
- 5 hours, 90% with flowers
- 7 hours, 10% with flowers

1. Organize the data collected, from shortest to longest length of exposure, in the data table above.

2. At the end of the experiment, the student stated that if plants are exposed to more hours of daylight, they will always produce a greater percentage of flowers. Is this a valid conclusion? Support your answer.

Sagot :

Sure, let's address both parts of the question step-by-step.

### Part 1: Organize the data collected, from shortest to longest length of exposure.

Here is the data provided:
- 1 hour: 0% with flowers
- 3 hours: 0% with flowers
- 5 hours: 90% with flowers
- 7 hours: 10% with flowers
- 9 hours: 50% with flowers

We will sort this data by the number of hours of exposure:

1. 1 hour: 0%
2. 3 hours: 0%
3. 5 hours: 90%
4. 7 hours: 10%
5. 9 hours: 50%

### Part 2: Analyze the student's conclusion

The student's conclusion was: "If plants are exposed to more hours of daylight, they will always produce a greater percentage of flowers."

To determine if this conclusion is valid, let's review the organized data:

- 1 hour: 0%
- 3 hours: 0%
- 5 hours: 90%
- 7 hours: 10%
- 9 hours: 50%

By examining the percentages, we can analyze the trend:

1. From 1 hour to 3 hours, the percentage remains the same at 0%.
2. From 3 hours to 5 hours, the percentage jumps from 0% to 90%.
3. From 5 hours to 7 hours, the percentage drops significantly from 90% to 10%.
4. From 7 hours to 9 hours, the percentage increases again from 10% to 50%.

From the above analysis, we can see that the percentage of flowers does not consistently increase or decrease with more hours of daylight. There are fluctuations, with a notable drop from 5 hours to 7 hours and then a rise again from 7 hours to 9 hours.

Thus, the student's conclusion that "if plants are exposed to more hours of daylight, they will always produce a greater percentage of flowers" is not valid. The data shows that the relationship between hours of daylight and the percentage of flowers produced is not monotonous (i.e., it does not exclusively increase or decrease but varies).

### Conclusion:

1. The organized data from shortest to longest length of exposure is:
- 1 hour: 0%
- 3 hours: 0%
- 5 hours: 90%
- 7 hours: 10%
- 9 hours: 50%

2. The student's conclusion is not valid. The percentage of flowers produced does not consistently increase with more hours of daylight exposure based on the provided data.