liberal bias definitely affects the news.
Friday, May 14, 2010
What variables beyond journalists control affect news?
i'm wanna write something about this. anyone who could shair or impart their perspectives regarding this topic?What variables beyond journalists control affect news?
liberal bias definitely affects the news.beauty
liberal bias definitely affects the news.
What is the role of the responding variable in a controlled experiment?
What is the role of the responding variable in a controlled experiment?
please help meWhat is the role of the responding variable in a controlled experiment?
The responding variable is the variable that will change as a result of the change in the manipulated variable. Let look at its role using a hypothetical example. Assume that you are trying to test whether a certain pill will lower blood pressure. Your measurement of blood pressure before and after the treatment is your responding variable. Your controlled experiment is as follows:
1. Sign up a group of people who agree to be studied.
2. Randomly assign people into a treatment and a control group.
3. Measure the subjects blood pressure.
4. Administer a placebo (sugar pill) to the control group and your experimental pill to the treatment group.
5. Measure the subjects blood pressure.
6. Perform a statistical test that examines whether the responding variable (blood pressure measurement) for the treatment group decreased by more than the responding variable of the control group.
please help meWhat is the role of the responding variable in a controlled experiment?
The responding variable is the variable that will change as a result of the change in the manipulated variable. Let look at its role using a hypothetical example. Assume that you are trying to test whether a certain pill will lower blood pressure. Your measurement of blood pressure before and after the treatment is your responding variable. Your controlled experiment is as follows:
1. Sign up a group of people who agree to be studied.
2. Randomly assign people into a treatment and a control group.
3. Measure the subjects blood pressure.
4. Administer a placebo (sugar pill) to the control group and your experimental pill to the treatment group.
5. Measure the subjects blood pressure.
6. Perform a statistical test that examines whether the responding variable (blood pressure measurement) for the treatment group decreased by more than the responding variable of the control group.
The Importance of a controlled variable?
What is The Importance of a controlled variable?The Importance of a controlled variable?
In the scientific method, the control variable is the variable that is not changed in the experiment. If you do not have a control variable then you may not know if someting else like the measurement equipment is not affecting the results, or just random variation is giving the result.
In the scientific method, the control variable is the variable that is not changed in the experiment. If you do not have a control variable then you may not know if someting else like the measurement equipment is not affecting the results, or just random variation is giving the result.
In an experiment, the CONTROL group is used to test the effect of the INDEPENDENT VARIABLE... True or False?
I thought it was True, but I was wrong (it was a question on a test).In an experiment, the CONTROL group is used to test the effect of the INDEPENDENT VARIABLE... True or False?
False; the control is used to compare the effect of an independent variable as nothing is used on the controlIn an experiment, the CONTROL group is used to test the effect of the INDEPENDENT VARIABLE... True or False?
False because the control is not altered. It is just used as a base for comparison
The control group is to maintain a known component of the experiment. The independent variable is compared to the control value to determine results. The wording of the question is very tricky!
False; the control is used to compare the effect of an independent variable as nothing is used on the controlIn an experiment, the CONTROL group is used to test the effect of the INDEPENDENT VARIABLE... True or False?
False because the control is not altered. It is just used as a base for comparison
The control group is to maintain a known component of the experiment. The independent variable is compared to the control value to determine results. The wording of the question is very tricky!
How are control variables and expermental variables used in scientific investigations?
Data is collected for various values of the experimental variable while the controlable variables are kept constant.
In chemical and some biological laboratory tests where one wishes to quantify a particular element or compound in a sample, the procedure calls for using a known standard and/or a control. Sometimes there is a high contol and a low control, these being samples of carefully established known values.
Where results are to be primarily qualitative, a positive control and a negative control are often used.How are control variables and expermental variables used in scientific investigations?
Simple logic prevails. Isolate the condition you want to test, and eliminate extraneous influence from all other variables. In some experiments they use a ';double blind'; strategy to isolate the desired response. However, you need to test a large enough population of outcomes for the result to be statistically significant. The sample size is determined by the mathematical laws of probability and statistics.
In chemical and some biological laboratory tests where one wishes to quantify a particular element or compound in a sample, the procedure calls for using a known standard and/or a control. Sometimes there is a high contol and a low control, these being samples of carefully established known values.
Where results are to be primarily qualitative, a positive control and a negative control are often used.How are control variables and expermental variables used in scientific investigations?
Simple logic prevails. Isolate the condition you want to test, and eliminate extraneous influence from all other variables. In some experiments they use a ';double blind'; strategy to isolate the desired response. However, you need to test a large enough population of outcomes for the result to be statistically significant. The sample size is determined by the mathematical laws of probability and statistics.
Ice cube experiment controlled variable?
I'm doing a science experiment in which i have 3 ice cubes and put salt over one of them, sugar over one of them, and nothing over one of them and then measure the time or rate it takes to melt the ice cube.
is this a controlled experiment and what would be the responding and controlled variable?
Thanks in advance!Ice cube experiment controlled variable?
Yes, you are controlling all but one factor. For instance you are not heating one of them while letting the others thaw out naturally in addition to the conditions you've specified. That would not be controlled. It is controlled since you are varying one factor. The responding variable is the time it takes for each ice cube to melt, but this is due to the one variable you changed, which is the addition of a substance to the ice cube. The controlled variable is the ice cube. You are using the same identical ice cube in each of the three situations, and are comparing it to the control--which is the ice cube that has no substance added to it. Hope this helps.
is this a controlled experiment and what would be the responding and controlled variable?
Thanks in advance!Ice cube experiment controlled variable?
Yes, you are controlling all but one factor. For instance you are not heating one of them while letting the others thaw out naturally in addition to the conditions you've specified. That would not be controlled. It is controlled since you are varying one factor. The responding variable is the time it takes for each ice cube to melt, but this is due to the one variable you changed, which is the addition of a substance to the ice cube. The controlled variable is the ice cube. You are using the same identical ice cube in each of the three situations, and are comparing it to the control--which is the ice cube that has no substance added to it. Hope this helps.
May u give me an example of a controlled variable, sensor, controlled center & effector in everyday situations?
the real world is not a controlled environment like a lab
the only thing I can think of are traffic signs and etcMay u give me an example of a controlled variable, sensor, controlled center %26amp; effector in everyday situations?
uhhhhh Pi???May u give me an example of a controlled variable, sensor, controlled center %26amp; effector in everyday situations?
A controlled variable is a factor which could be changed but is kept the same in order to measure two other factors.
An everyday e.g.: Keeping the length of time that one runs for in order to measure the amount of weight lost over a period of weeks.
A sensor is a device which monitors a 'felt' factor.
An everyday e.g.: An industrial Air Con in a greenhouse, they take the temperature every couple of minutes, if its too hot, the air con is turned on, if too cold, its turned off.
A controlled center is a point from which all variables are controlled.
An everyday e.g.: In a hyroponicum, the computers control water temperatures, nutrient and element levels in the plants etc.
And thus the effector is a variable which affects these variables.
An everyday e.g.: A bug or insect which eats or infects the plants, limiting growth.
Hope this helps.
I may, we'll see.beauty
the only thing I can think of are traffic signs and etcMay u give me an example of a controlled variable, sensor, controlled center %26amp; effector in everyday situations?
uhhhhh Pi???May u give me an example of a controlled variable, sensor, controlled center %26amp; effector in everyday situations?
A controlled variable is a factor which could be changed but is kept the same in order to measure two other factors.
An everyday e.g.: Keeping the length of time that one runs for in order to measure the amount of weight lost over a period of weeks.
A sensor is a device which monitors a 'felt' factor.
An everyday e.g.: An industrial Air Con in a greenhouse, they take the temperature every couple of minutes, if its too hot, the air con is turned on, if too cold, its turned off.
A controlled center is a point from which all variables are controlled.
An everyday e.g.: In a hyroponicum, the computers control water temperatures, nutrient and element levels in the plants etc.
And thus the effector is a variable which affects these variables.
An everyday e.g.: A bug or insect which eats or infects the plants, limiting growth.
Hope this helps.
I may, we'll see.
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