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What is the difference between a controlled experiment and a variable?
In a control, the scientists know what to expect what will happen in an experiment... it is used for comparison.A variable is pretty simple. All it is, is the thing in the experiment that changes. There is usually only one of them in an experiment, and there are two kinds... Im sure you are familiar with them.-An independent variable is when the scientist controls what they are looking for-A dependent variable scientists dont control directly, but they measure for results
What is the value of r in the linear regression equation 67.50-4.90x?
Beautiful! Our patience has finally paid off. We knew it would happen some day, and now it has. We're asked to evaluate a variable in an equation in which that variable doesn't even appear.
The most common parameter variable used to represent slope is m What would happen if the slope parameter was changed to a as in y equals ax?
m is a Latin variable and it represents slope. Therefore, y=ax will not make sense because the a might represent area.
What does the hrizontal axis represent?
The domain. The independent variable. The x values in a function or two variable equation. Normally, the numbers on the horizontal axis represent the data you start with to figure out what will happen when you apply a function to those numbers. In a linear equation, y=3x+2 will cross the horizontal axis at (-2/3, 0), and will cross the vertical axis at (0,2), creating a line that moves upward to the right as the values on the horizontal axis increase.
If something is unlikely to happen does this mean that it will never happen?
No, it does not mean that it will never happen. Impossible means that it will never happen. unlikely to happen does mean that probably it will not happen..
