Math Problem Statement
Alfonso surveyed several students in his school. He asked them to give the grade that they are in and the number of pets they have at home. The results are shown in the table below.
Find the correlation coefficient for the data. Round to the nearest hundredth.
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Correlation
Linear Relationships
Formulas
Correlation coefficient formula: r = (nΣxy - ΣxΣy) / √[(nΣx² - (Σx)²)(nΣy² - (Σy)²)]
Theorems
Correlation Coefficient Interpretation
Properties of Linear Correlation
Suitable Grade Level
Grades 9-12
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