Experimental Design B/C

Test your knowledge of various Science Olympiad events.
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dxu46
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Re: Experimental Design B/C

Postby dxu46 » December 15th, 2017, 1:43 pm

OrigamiPlanet wrote:
dxu46 wrote:It seems like sg2themax isn't posting so I'll post the first question.
Question 1:
1. Define and list at least 3 measures of central tendency.
2. Define and list at least 3 measures of variation.


1. Mean, median and mode
2. Variance, interquartile range and standard deviation

1. Define and list at least 3 measures of central tendency.
2. Define and list at least 3 measures of variation.

But otherwise correct. Your turn.

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Re: Experimental Design B/C

Postby OrigamiPlanet » December 17th, 2017, 1:57 pm

dxu46 wrote:
1. Define and list at least 3 measures of central tendency.
2. Define and list at least 3 measures of variation.

But otherwise correct. Your turn.


Oh whoops, well mean is the average of all the data, median is the center of the data, and mode is the most common data point. Variance is the distance a point is from it's average value, standard deviation quantifies the separation, and interquartile range will catergorize the data into four different ranges.

Question 2
1. Give the general "formula" for writing a hypothesis.
2. What is a histogram? When should it be used?
3. Compare and contrast systematic and random errors.
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Re: Experimental Design B/C

Postby dxu46 » January 3rd, 2018, 10:59 am

OrigamiPlanet wrote:
Question 2
1. Give the general "formula" for writing a hypothesis.
2. What is a histogram? When should it be used?
3. Compare and contrast systematic and random errors.

Bit late, but...
1. If I change the IV, then the DV will change because the rationale.
2. It is a graph used to show frequency of numerical values. It should be used instead of a bar graph when the IVs are numbers but do not show change that would be better shown using a line graph.
3. A systematic error is due to one or more mistakes a tool has that makes the data inaccurate, but still would show trends, etc. A random error is due to the limited precision of the experimenter and/or tool. It is basically a systematic error in one data point.

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Re: Experimental Design B/C

Postby OrigamiPlanet » January 8th, 2018, 9:43 pm

dxu46 wrote:
OrigamiPlanet wrote:
Question 2
1. Give the general "formula" for writing a hypothesis.
2. What is a histogram? When should it be used?
3. Compare and contrast systematic and random errors.

Bit late, but...
1. If I change the IV, then the DV will change because the rationale.
2. It is a graph used to show frequency of numerical values. It should be used instead of a bar graph when the IVs are numbers but do not show change that would be better shown using a line graph.
3. A systematic error is due to one or more mistakes a tool has that makes the data inaccurate, but still would show trends, etc. A random error is due to the limited precision of the experimenter and/or tool. It is basically a systematic error in one data point.

Yup! Your turn!
Div. C - Cumberland Valley High School

Events: Battle at Valley Forge/MC Barons
Codebusters (3/3); Dynamic Planet (3/1); Astronomy (-/2)

Substitute in Event
Geologic Mapping (-/2)

Email me for anything!

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Re: Experimental Design B/C

Postby dxu46 » January 9th, 2018, 3:35 pm

Question
List two methods for making an Experimental Control and when they appropriate to use.

Just confirmed: my topics for this year are the Statement of Problem, Hypothesis, Variables, Experimental Control, and Conclusion. Quite different from last year, which was Quantitative Data(table and graph), statistics, and Errors...crying inside :cry: :cry: :cry:

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Re: Experimental Design B/C

Postby kate! » February 23rd, 2018, 11:07 am

dxu46 wrote:
Question
List two methods for making an Experimental Control and when they appropriate to use.

Just confirmed: my topics for this year are the Statement of Problem, Hypothesis, Variables, Experimental Control, and Conclusion. Quite different from last year, which was Quantitative Data(table and graph), statistics, and Errors...crying inside :cry: :cry: :cry:


Reviving the forum yay
Answers
idk if this is right but here goes
1) when your independent variable has values, (such as 2 marbles, 4 marbles, 6 marbles) the control would be zero (so, 0 marbles)
2) when your independent variable has levels, (such as paper towel, printer paper, plastic bag) the control would be the medium value (so,
the printer paper because it is medium thickness)
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, water, and birds, yay for the third time!

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Re: Experimental Design B/C

Postby dxu46 » February 23rd, 2018, 4:14 pm

kate! wrote:
dxu46 wrote:
Question
List two methods for making an Experimental Control and when they appropriate to use.

Just confirmed: my topics for this year are the Statement of Problem, Hypothesis, Variables, Experimental Control, and Conclusion. Quite different from last year, which was Quantitative Data(table and graph), statistics, and Errors...crying inside :cry: :cry: :cry:


Reviving the forum yay
Answers
idk if this is right but here goes
1) when your independent variable has values, (such as 2 marbles, 4 marbles, 6 marbles) the control would be zero (so, 0 marbles)
2) when your independent variable has levels, (such as paper towel, printer paper, plastic bag) the control would be the medium value (so,
the printer paper because it is medium thickness)

That works, but it isn't something that I would normally use. Your turn!

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Re: Experimental Design B/C

Postby kate! » February 24th, 2018, 12:28 pm

Okay so I'm not exactly sure if these are good questions but here goes
Questions?
1. What are 3 examples of qualitative observations?
2. What would be the independent and dependent variables and hypothesis in this experiment? (topic: parachutes... yes I am aware this experiment already exists)
- plastic bag
- newspaper
- printer paper
- paper towel
- one small plastic cup
- string
- 10 marbles
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, water, and birds, yay for the third time!

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Re: Experimental Design B/C

Postby dxu46 » February 27th, 2018, 7:19 pm

kate! wrote:Okay so I'm not exactly sure if these are good questions but here goes
Questions?
1. What are 3 examples of qualitative observations?
2. What would be the independent and dependent variables and hypothesis in this experiment? (topic: parachutes... yes I am aware this experiment already exists)
- plastic bag
- newspaper
- printer paper
- paper towel
- one small plastic cup
- string
- 10 marbles

Answers
1. In a thermal energy experiment...
- We noticed that the ice cube didn't melt parallel to the heat plate
- We noticed that the ice cube's temperature never exceeded 0 degrees Celsius
- We noticed that the heat plate didn't return to its temperature it was before we started the experiment
2. How does the material of a parachute affect the time it takes to fall to the ground from a fixed height?

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Re: Experimental Design B/C

Postby kate! » February 27th, 2018, 7:57 pm

dxu46 wrote:
kate! wrote:Okay so I'm not exactly sure if these are good questions but here goes
Questions?
1. What are 3 examples of qualitative observations?
2. What would be the independent and dependent variables and hypothesis in this experiment? (topic: parachutes... yes I am aware this experiment already exists)
- plastic bag
- newspaper
- printer paper
- paper towel
- one small plastic cup
- string
- 10 marbles

Answers
1. In a thermal energy experiment...
- We noticed that the ice cube didn't melt parallel to the heat plate
- We noticed that the ice cube's temperature never exceeded 0 degrees Celsius
- We noticed that the heat plate didn't return to its temperature it was before we started the experiment
2. How does the material of a parachute affect the time it takes to fall to the ground from a fixed height?


Perfect answers, your turn!
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, water, and birds, yay for the third time!

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dxu46
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Re: Experimental Design B/C

Postby dxu46 » March 1st, 2018, 5:00 pm

Questions
1. What's the difference between a qualitative experiment and a quantitative experiment?
2. How would the differences be represented in the quantitative data section (including data table and graph)?

UTF-8 U+6211 U+662F
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Re: Experimental Design B/C

Postby UTF-8 U+6211 U+662F » March 1st, 2018, 5:05 pm

dxu46 wrote:
Questions
1. What's the difference between a qualitative experiment and a quantitative experiment?
2. How would the differences be represented in the quantitative data section (including data table and graph)?

Hijacking this thread a little, but you don't need to put your questions in hide tags :P

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Re: Experimental Design B/C

Postby dxu46 » March 1st, 2018, 5:06 pm

UTF-8 U+6211 U+662F wrote:
dxu46 wrote:
Questions
1. What's the difference between a qualitative experiment and a quantitative experiment?
2. How would the differences be represented in the quantitative data section (including data table and graph)?

Hijacking this thread a little, but you don't need to put your questions in hide tags :P

Nah, I like
Hide
tags.

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Re: Experimental Design B/C

Postby kate! » March 4th, 2018, 8:12 am

dxu46 wrote:
Questions
1. What's the difference between a qualitative experiment and a quantitative experiment?
2. How would the differences be represented in the quantitative data section (including data table and graph)?


Answers
1. A qualitative experiment would have levels of the independent variable (i.e. copy paper, newspaper, lined paper) and a quantitative experiment would have amount (i.e. 3 marbles, 4 marbles, 5 marbles)

2. Qualitative experiment table- separate data for trials of each level of the IV
Quantitative experiment table- data for trials of each amount

Qualitative experiment graph- depending on the amount of levels, x amount of lines on the graph
Quantitative experiment graph- one line on the graph
Last year I knew stuff about rocks, minerals, experiments, and ecosystems, yay!
Now I know stuff about amphibians, reptiles, water, and more experiments, yay again!
I'm planning to learn stuff about oceanography, fossils, water, and birds, yay for the third time!

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dxu46
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Re: Experimental Design B/C

Postby dxu46 » March 4th, 2018, 10:32 am

kate! wrote:
dxu46 wrote:
Questions
1. What's the difference between a qualitative experiment and a quantitative experiment?
2. How would the differences be represented in the quantitative data section (including data table and graph)?


Answers
1. A qualitative experiment would have levels of the independent variable (i.e. copy paper, newspaper, lined paper) and a quantitative experiment would have amount (i.e. 3 marbles, 4 marbles, 5 marbles)

2. Qualitative experiment table- separate data for trials of each level of the IV
Quantitative experiment table- data for trials of each amount

Qualitative experiment graph- depending on the amount of levels, x amount of lines on the graph
Quantitative experiment graph- one line on the graph

That would work, your turn!


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