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What is a moderating variable?

Moderating variables are important in scientific analysis where the researchers want to determine the correlation between two variables. Scientists often look at moderating variables to analyze the effect of the variable on a particular outcome. For example, researchers have studied the effect of social support on the correlation between stress and depression. Although high stress levels generally correlate with high depression levels, social support moderates the strength of the correlation. Thus, with greater social support, a person experiences less depression as a function of higher stress..

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How is coefficient of variation interpreted?

Coefficient of variance (CV) is used to understand the scatter of variables that are expressed in different units. For example, the coefficient of variation for blood pressure can be compared with the coefficient of variation for pulse rate. In this case, blood pressure and pulse rate are two different variables.While interpreting coefficient of variation, 0 can be reported provided it actually implies "zero." For example, zero weight implies no weight. Coefficient of variation can be reported for variables such as weight. In contrast, 0 degrees Celsius does not actually imply "zero" temperat..

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How do you go from point-slope form to slope-intercept form?

Simplify any parenthesis in the point slope formAny numbers next to any parenthesis must be multiplied by items in the parenthesis. Take the example: y-5=6(x-7). In this example, the 6 must be multiplied by the "x" and the 7. \nMove items across the equals sign until the 'y' is aloneNumbers on the same side of the equal sign as the "y" must have the opposite sign applied to both sides of the equation. In this example, y-5=6x-42, the "5" must be added to both sides of the equation which cancels out the 5 on the side with the "y."\nRewrite the equation in slope-intercept formOnce you..

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How do you find the cube of a number?

The cube B^3 can be expressed in expanded form as B x B x B. To evaluate any cube, it is simply a matter of performing the multiplication indicated. For example, 8 cubed or 8^3 is 8 x 8 x 8, which equals 512. The cube of a whole number is defined as a perfect cube.While learning about cubes, students also are exposed to the opposite of a cubed number, which is the cube root. To express a cube root of a number, a radical sign is used along with the number 3 outside the radical sign, which is called the index. The cube root of a number C can also be given as C ^ 1/3. To find the cube root of 512..

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What is the roster method?

In mathematics, a "set" is defined as a collection of items, known as "elements." It is typically denoted by a capital letter. A set that belongs to another set is called a "subset." In the roster method, all listed elements can be in any order but should be distinct from one another. The "statement form" and "rule or set builder" are two other methods to describe sets.

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How do you write a decimal as a fraction?

Using a fraction with the decimal as the numerator and a denominator of one, such as 3.2/1, eliminate the decimal point. This is accomplished by multiplying both the numerator and the denominator by a power of 10. If there is one decimal place, it will be multiplied by 10. If there are two decimal places, they are multiplied by 100, and so on. There is one decimal place in 3.2, so the numerator and the denominator will be multiplied by 10. The result for this step is 32/10.\nNext, simplify the fraction. This is done by dividing both the numerator and the denominator by the highest common facto..

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How do you solve algebraic equations?

Determine what is to be solved forAlgebraic equations may have one or more variables, and so it is important to know what is being asked to solve for. For example, an equation may have one variable (3x + 3 = 18) or two variables (y - 3x =18). To begin solving any equation, it is important to know what to solve for. The question may state to solve for any of the variables contained in the equation.Solve the equation by doing the same thing on both sidesThe solution to an equation may be discovered by using the order of operations backwards. To begin finding the value of x in the example 3x + 3 ..

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How can you teach yourself calculus?

Create a learning planDevelop a learning plan. To learn calculus outside of a classroom experience, a plan or syllabus is needed. Determine how long will be spent on each subject. Devote time to answer questions, take practice tests and review any wrong answers.Gather print materialsIt is helpful to use print materials such as college textbooks or workbooks. Amazon offers books that contain full diagrams, instructions, explanations and answers. Textbooks may also come with outside reference materials and links to online practice tests. Gather online materialsUse the Internet as a resource and ..

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What is a co-interior angle?

The third line that intersects the two lines is called the transversal. Co-interior angles always lie on the same side of the transversal, never on opposite sides. The sum of a pair of co-interior angles is always equal to 180 degrees if the two lines are parallel to each other. When the two lines are not parallel, the sum of the two co-interior angles would not be exactly 180 degrees. This is an important axiom in geometry.

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What are printable bar graphs useful for?

Bar charts are fairly simple and can be made using only straight lines. As a result, early printers, many of which couldn't print thin lines at angles, could print simple bar charts, making them popular options in the early days of business computers. Their simplicity still makes them a popular option for conveying certain types of information.\nOne of the primary advantages of bar charts is that they allow people to compare information visually. Bar charts are useful for comparing categories. An example bar chart might show the average temperatures in various regions. While numerical dat..

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