name
period
scientific method scenarios
read the following scenario. then answer the following questions based on the experiment.
a shopping mall wanted to determine whether the more expensive ough stuff\ floor wax was better than the cheaper \steel seal\ floor wax at protecting its floor tiles against scratches.
- one liter of each brand of floor wax was applied to each of 5 test sections of the main hall of the mall.
- the test sections were all the same size and were covered with the same kind of tiles.
- five (5) other test sections received no wax.
- each week for 3 weeks, the number of scratches in each of the test sections was counted.
results:
(image of a table with average number of scratches, rows: after 1 week, after 2 weeks, after 3 weeks; columns: tough stuff, steel seal, no wax. values: after 1 week: tough stuff 5, steel seal 5, no wax 12; after 2 weeks: tough stuff 11, steel seal 18, no wax 22; after 3 weeks: tough stuff 17, steel seal 26, no wax 35)
4. what is the data that is being collected in this experiment?
5. looking at the results, what conclusion can be made about the 2 different types of floor waxes?
6. why did the shopping mall have experimental set - ups (with wax) and a control set - up (no wax)?
7. why did the shopping mall put each type of wax on 5 different sections instead of just 1 each?
8. was this a valid experiment? why or why not?

Question

name
period
scientific method scenarios
read the following scenario. then answer the following questions based on the experiment.
a shopping mall wanted to determine whether the more expensive 	ough stuff\ floor wax was better than the cheaper \steel seal\ floor wax at protecting its floor tiles against scratches.
- one liter of each brand of floor wax was applied to each of 5 test sections of the main hall of the mall.
- the test sections were all the same size and were covered with the same kind of tiles.
- five (5) other test sections received no wax.
- each week for 3 weeks, the number of scratches in each of the test sections was counted.
results:
(image of a table with average number of scratches, rows: after 1 week, after 2 weeks, after 3 weeks; columns: tough stuff, steel seal, no wax. values: after 1 week: tough stuff 5, steel seal 5, no wax 12; after 2 weeks: tough stuff 11, steel seal 18, no wax 22; after 3 weeks: tough stuff 17, steel seal 26, no wax 35)
4. what is the data that is being collected in this experiment?
5. looking at the results, what conclusion can be made about the 2 different types of floor waxes?
6. why did the shopping mall have experimental set - ups (with wax) and a control set - up (no wax)?
7. why did the shopping mall put each type of wax on 5 different sections instead of just 1 each?
8. was this a valid experiment? why or why not?

Accepted Answer

### Question 4
# Brief Explanations:
The experiment's data collection focuses on the number of scratches in each test section (with "Tough Stuff", "Steel Seal", or no wax) over 3 weeks. The table shows the average number of scratches for each group at 1, 2, and 3 weeks. So the data is the average number of scratches in each test section (for each wax type and the control) after 1, 2, and 3 weeks.
# Answer:
The data being collected is the average number of scratches in each test section (for "Tough Stuff" floor wax, "Steel Seal" floor wax, and no - wax test sections) after 1 week, 2 weeks, and 3 weeks.

### Question 5
# Brief Explanations:
Compare the average number of scratches for "Tough Stuff" and "Steel Seal" over time. After 1 week, both have 5 scratches. After 2 weeks, "Tough Stuff" has 11 and "Steel Seal" has 18. After 3 weeks, "Tough Stuff" has 17 and "Steel Seal" has 26. Also, both waxes have far fewer scratches than the no - wax sections. So "Tough Stuff" is better at protecting against scratches over time (after 2 and 3 weeks) than "Steel Seal", and both waxes are better than no wax.
# Answer:
Both "Tough Stuff" and "Steel Seal" floor waxes are better at protecting floor tiles from scratches than having no wax. Additionally, "Tough Stuff" floor wax is better at protecting floor tiles from scratches than "Steel Seal" floor wax over time (after 2 weeks and 3 weeks, the average number of scratches in "Tough Stuff" - treated sections is less than that in "Steel Seal" - treated sections).

### Question 6
# Brief Explanations:
In a scientific experiment, a control group (no wax) is used to compare with the experimental groups (with wax). This helps to determine if the waxes actually have an effect on reducing scratches. By having a control, we can see the natural rate of scratching (without wax) and then assess how the waxes perform relative to that.
# Answer:
The shopping mall had a control set - up (no wax) to provide a baseline for comparison. By comparing the number of scratches in the experimental set - ups (with wax) to the control set - up (no wax), the mall could determine if the floor waxes were actually effective in reducing the number of scratches on the floor tiles.

### Question 7
# Brief Explanations:
Using only 1 section per wax type would make the results more likely to be affected by random factors (like a particularly high - traffic or low - traffic spot in that single section). By using 5 sections for each wax type, we can average out these random variations. This increases the reliability and validity of the experiment, as the results are more likely to represent the true effect of the wax.
# Answer:
The shopping mall put each type of wax on 5 different sections instead of just 1 each to reduce the impact of random factors (such as a section being in a particularly high - traffic or low - traffic area) on the results. Using multiple sections and then taking an average provides a more reliable and accurate measure of how well each wax protects against scratches, increasing the validity of the experiment.

### Question 8
# Brief Explanations:
A valid experiment should have a clear independent variable (type of wax, including no wax), dependent variable (number of scratches), controlled variables (test section size, type of tiles, amount of wax - 1 liter, etc.). In this experiment, the test sections were the same size, had the same kind of tiles, and the same amount of wax (1 liter) was applied. There were multiple test sections for each group (5 for each wax, 5 for no wax), and the data was collected over time. So the experiment is valid because the independent variable (wax type) was manipulated, the dependent variable (number of scratches) was measured, controlled variables were kept constant, and there were multiple replications (5 sections per group) to increase reliability.
# Answer:
This was a valid experiment. The independent variable (type of floor wax, including the no - wax condition) was manipulated, the dependent variable (number of scratches) was measured. Controlled variables such as the size of the test sections, the type of floor tiles, and the amount of floor wax (1 liter) applied to each test section were kept constant. Also, there were multiple replications (5 test sections for each wax type and 5 for the no - wax condition), which helps to reduce the impact of random error and increase the reliability of the results.

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