Do you understanding the four (4) big ideas in experiments? 1. Control 2. Randomize 3. Replication (two types) 4. Blocking Summarize these now in your own words. (Go ahead, be first, take the challenge!)
I think that I understand the four "big ideas" pretty well. In an experiment, it is important to CONTROL sources of variation that could effect the response variable. This is done by trying to keep the conditions the same for each subject, reducing the variation in our responses. It is also crucial to RANDOMIZE because it is our only hope of getting a fair conclusion. When we don't randomize, we leave our experiment vulnerable to bias and effects that we didn't even know about. In terms of REPLICATION, it is important to repeat the experiment many times so that we can analyze the variation in responses. One trial doesn't give us a very accurate idea of the situation. We also need to replicate an experiment among a different group of people, taking into account that the group in the experiment isn't likely to be representative of all people. It is true that sometimes certain attributes of the subjects in an experiment that we aren't specifically focusing on may still affect the outcome of the experiment. BLOCKS are basically a group of similar individuals. We use the method of blocking to reduce the effects of these factors that we can't control, such as age or skill level. This is often used to ensure fairness.
Control: to control everything in a study/experiment/sample/ect. by controlling conditions and making lurking variables impossible. Randomize: the only way to make sure your data is unbiased Replication: like science, a way to make sure you get the same "correct" data several times, to make our conclusion more accurate Blocking:helps to overrule lurking variables that can cause several different peaks/vallies in the data by making them groups
idk if i really understand it, i guess we'll find out! uuummm, i don't think i can follow that Amanda, but.... 1. Control- it's kinda like a lurking variable in a way. we know it may have an effect, but it's not part of the experiment. 2. Randomize- evens out variation, without it, we would have bias. 3. Replication- helps lead to more accurate data by doing more tests. 4. Blocking- groups that have like-like, then randomization occurs in those groups
Control--> control can be achieved by controlling conditions of experiment or sample and making lurking variables impossible. Randomize--> eliminates bias from the experiment or sampling Replication--> an experiment must be repeatable and, yeah, for accurate results Blocking--> helps overcome lurking variables that can cause discrepincies in results
I understand the four principles quite well. Control is what the experiment is based on(what would happen regularly). Randomising is randomly selecting people to be subjects for different treatments. Replication is the idea that the experiment can be reproduced with the same results. Blocking is to reduce variation; we separate subjects into groups before the experiment.
CONTROL: control is how an experiment is run. In the control lurking variables need to be eliminated. RANDOMIZE: Random assignment to treatment a subject recieves. Crucial to get an accurate conclusion (no bias). REPLICATION: 1. Enough subjects must be used to provide a near accurate conclusion. 2. The experiment should be able to be repeated as well as have similar conclusions. BLOCKING: Separation of subjuects into groups (stratifying). Also helps to reduce variation.
I think i'm getting the big ideas (yay) the control how the experiments run by making sure ALL the conditions are the same. Randomize is randomly assigning the treatment a subject recieves. The 2 types of replication are having enough subjects and the experiment should be repeatable and generate results. Blocking is when you separate all the subjects into similar groups BEFORE the experiment. All these help the bias be non-existant (waoh..awsome!) p.s. i hate the flu
Ok so a control in the experiment is pretty much the variable that the other subjects are compared too. Randomization is used to eliminate bias and to make the experiment more fair. Replication is basically, can the experiment be repeated and get similar results. Replication brings variation of answers and conclusions. Blocking reduces variation and specifies the experiment more.
It's Important to control the experiment(keep conditions the same) so that we don't get results from lurking variables instead of our response variable.We need to Randomize the experiment so it is as fair as possible and with out bias.It is not enough to do an experiment only once.If we Replicate the experiment and the results are the same, then the results are more accurate and reliable.Blocking improves randomizing and fairness.Similar groups are randomized within the "blocks".
Control in any experiment is vital because you don't want to have unwanted variation that could effect your results. Randomization is important because it eliminates bias that can slant results. Replication is important because in order to prove a theory it must be repeatable. Blocking is used to reduce the effect of lurking variables. Blocking ties in with the first term control. It is a method we use to better "control" the experiment.
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I think that I understand the four "big ideas" pretty well. In an experiment, it is important to CONTROL sources of variation that could effect the response variable. This is done by trying to keep the conditions the same for each subject, reducing the variation in our responses. It is also crucial to RANDOMIZE because it is our only hope of getting a fair conclusion. When we don't randomize, we leave our experiment vulnerable to bias and effects that we didn't even know about. In terms of REPLICATION, it is important to repeat the experiment many times so that we can analyze the variation in responses. One trial doesn't give us a very accurate idea of the situation. We also need to replicate an experiment among a different group of people, taking into account that the group in the experiment isn't likely to be representative of all people. It is true that sometimes certain attributes of the subjects in an experiment that we aren't specifically focusing on may still affect the outcome of the experiment. BLOCKS are basically a group of similar individuals. We use the method of blocking to reduce the effects of these factors that we can't control, such as age or skill level. This is often used to ensure fairness.
Control: to control everything in a study/experiment/sample/ect. by controlling conditions and making lurking variables impossible.
Randomize: the only way to make sure your data is unbiased
Replication: like science, a way to make sure you get the same "correct" data several times, to make our conclusion more accurate
Blocking:helps to overrule lurking variables that can cause several different peaks/vallies in the data by making them groups
idk if i really understand it, i guess we'll find out!
uuummm, i don't think i can follow that Amanda, but....
1. Control- it's kinda like a lurking variable in a way. we know it may have an effect, but it's not part of the experiment.
2. Randomize- evens out variation, without it, we would have bias.
3. Replication- helps lead to more accurate data by doing more tests.
4. Blocking- groups that have like-like, then randomization occurs in those groups
Control--> control can be achieved by controlling conditions of experiment or sample and making lurking variables impossible.
Randomize--> eliminates bias from the experiment or sampling
Replication--> an experiment must be repeatable and, yeah, for accurate results
Blocking--> helps overcome lurking variables that can cause discrepincies in results
omg, im gonna be late to class, *curses*
I understand the four principles quite well. Control is what the experiment is based on(what would happen regularly). Randomising is randomly selecting people to be subjects for different treatments. Replication is the idea that the experiment can be reproduced with the same results. Blocking is to reduce variation; we separate subjects into groups before the experiment.
CONTROL: control is how an experiment is run. In the control lurking variables need to be eliminated.
RANDOMIZE: Random assignment to treatment a subject recieves. Crucial to get an accurate conclusion (no bias).
REPLICATION: 1. Enough subjects must be used to provide a near accurate conclusion. 2. The experiment should be able to be repeated as well as have similar conclusions.
BLOCKING: Separation of subjuects into groups (stratifying). Also helps to reduce variation.
I understand the four principles, some of them from experiments done in my earlier science classes.
Control: used to avoid sources of variation, we are trying to also avoif lurking variables
Randomize: Only way for things to be equal, the chance for a subject ot be chosen must be equal
replication : the experiment must be repeatable, and repeatable with similar results
Blocking: groupng the subjects into similar groups to reduce variation
All these are used to make sure there is no bias in the results
I think i'm getting the big ideas (yay) the control how the experiments run by making sure ALL the conditions are the same. Randomize is randomly assigning the treatment a subject recieves. The 2 types of replication are having enough subjects and the experiment should be repeatable and generate results. Blocking is when you separate all the subjects into similar groups BEFORE the experiment. All these help the bias be non-existant (waoh..awsome!) p.s. i hate the flu
Ok so a control in the experiment is pretty much the variable that the other subjects are compared too. Randomization is used to eliminate bias and to make the experiment more fair. Replication is basically, can the experiment be repeated and get similar results. Replication brings variation of answers and conclusions. Blocking reduces variation and specifies the experiment more.
It's Important to control the experiment(keep conditions the same) so that we don't get results from lurking variables instead of our response variable.We need to Randomize the experiment so it is
as fair as possible and with out bias.It is not enough to do an experiment only once.If we Replicate the experiment and the results are the same, then the results are more accurate and reliable.Blocking improves randomizing and fairness.Similar groups are randomized within the "blocks".
Control in any experiment is vital because you don't want to have unwanted variation that could effect your results. Randomization is important because it eliminates bias that can slant results. Replication is important because in order to prove a theory it must be repeatable. Blocking is used to reduce the effect of lurking variables. Blocking ties in with the first term control. It is a method we use to better "control" the experiment.
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