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In team-teaching, two or more teachers lead a class. A researcher tested the use of 74)
team-teaching in mathematics education. Two of the variables measured on each teacher
in a sample of 159 mathematics teachers were years of teaching experience x and reported
success rate y (measured as a percentage)of team-teaching mathematics classes.
The correlation coefficient for the sample data was reported as r = -0.3. Interpret this
result.
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