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Q: Science Fair Projects involving Dependent and independent variables.?
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What is the difference between independent and mutually exculusive projects with normal and nonnormal cash flows?

Independent projects are those which are not related or dependent on any other projects while in mutually exclusive projects if one project is selected other project automatically discards


Why is a control especially important in biological investigations?

There are three types of variables in a scientific experiment: Independent: Changes which you, the experimenter, control. Dependent: Changes which occur based on the changes you make (Independent) Control: Anything else which might change or influence the dependent variables outside of the independent changes made by the experimenter. Control variables must be monitored and controlled during an experiment to make sure that they are kept equal, otherwise they could make your results false or unreliable. In the Cool Science Projects link, they discuss a plant growing project. You wish to determine the growth difference between plants which have a full eight hours of sunlight versus plants which receive four hours of sunlight. The amount of time the plant is in the full sunlight is the independent variable and one of the dependent variables is the growth rate of each plant. There may be other dependent variables, such as the overall height of each plant. A good example of a control variable might be the amount or type of water used to hydrate the plants during the experiment. If you were to give one plant more water than another, or different qualities of water, you would be further influencing the experiment beyond the initial independent variable. You could not then say that it was strictly the duration of time in the sun which caused the growth or height differential, as it may have been other variables which caused these changes. It's important to be aware of exactly what changed within an experiment, and what did not, in order to keep your findings valid.


What are projects involving water soil and forests are called?

conservation projects


What are the variables in an lemon battery power a caclator projects?

2


What are quantifiable projects?

It is a project where the dependent variable can be measured.


Are construction projects which have a common support purpose but are not mutually dependent funded as separate projects?

yes


How is a variable used in science?

variables are used by being used in science projects


Where can one find ideas for class projects involving volcanoes?

Class projects involving volcanoes can be a great idea as they allow teaching of some geography, geology and physics. The website called Storm The Castle has some great ideas.


Why is it important to know your variables when conducting an investigatory problem?

A variable is something which can vary, or have different values. Scientific investigations always involve three types of variables: 1) The independent variable: this is the variable which you deliberately alter, so you will know its values before you start the experiment. For example, if you want to know how the amount of light a plant gets affects its growth, you must give aome plants different amounts of light. Since you need to choose the amounts, you will know the values of this variable before you start the experiment. 2) The dependent variable:this is the variable you must measure to find out if it changes as a result of you changing the independent variable. Since you have to measure it to find out its values, you will not know the values (ie the results) before doing the experiment. In the plant example you wouls have to find some way of measuring plant growth in the different light conditions. 3) Control variables: these are any other variables which may affect the values of your dependent variable, so they need to be kept constant to make it a fair test. In our example, things like the temperature or the amount of water could also alter plant growth, so they would have to be kept constant. These variables are also called confoundingvariables. The basic principle is only alter one variable (the independent variable) at a time; keep everything else the same. See: http://www.sciencebuddies.org/science-fair-projects/project_experiment_fair_test.shtml http://www.fair.science-resources.org/sci_meth.htm


The firm should accept independent projects if?

"The independent projects implies that the cash flows of the two investments are not linked to each other". If the cash flows of to investments are not linked then the firm should accept the project.


Any good science fair projects involving chemistry for an 8th grader?

One great science fair project involving chemistry for 8th grade is how to create salt flats.


Projects involving forest conservation and power generating plants were completed under which program?

tva