Assuming a and b are real positive numbers, solve the equation or inequality and express the solution in interval notation. |x a| b
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X = Independent Variable Y = Dependent Variable EX: X = study hours = independent Y = grades = dependent variable Explanatory Variablindependent variable or X Response variableDependent variable or y !!!!ALWAYS QUANTITATIVE DATA!!!! If x increases, y increases If x increases, y decreases Scatter plot forms ; ● Linear ● Curve ● Scatter OUTLIERS!!! Correlations :r The closer the datas are the stronger the relationship The closer the datas are together the closer it is to +1 in a positive correlation r has no unit of measure! R only describe linear relationships nonresistant resistant
Textbook: Algebra and Trigonometry
Author: Cynthia Y. Young
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