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skgoldsmith
30.07.2021 •
Mathematics
Calculate the correlation coefficient, r, for the data below. Row chart ( (x )(y ) ) row chart ( ( -10 )( 2 ) ) row chart ( ( -8 )( -3 ) ) row chart ( ( -1 )( -15 ) ) row chart ( ( -4 )( -10 ) ) row chart ( ( -6 )( -6 ) ) row chart ( ( -7 )( -5 ) ) row chart ( ( -5 )( -8 ) ) row chart ( ( -3 )( -13 ) ) row chart ( ( -2 )( -14 ) ) row chart ( ( -9 )( -1 ) )
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Ответ:
The correlation coefficient is approximately -0.9949
Step-by-step explanation:
The given data is presented as follows;
The correlation coefficient, r is given as follows;
From MS Excel, we have;
∑(
)·(
) = -155.5
∑(
)² = 82.5
∑(
)² = 296.1
Therefore, r = -155.5/(√(82.5 × 296.1)) ≈ -0.9949
The correlation coefficient, r ≈ -0.9949
Ответ:
find the lateral area