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A group of students would like to know how well the value of coins in a bag can be predicted based on their weight. They collected the following data.





Weight (grams) 32.7 -96.9- 93.8 65.4 65.4 79.7 69.3 112.1
Value $0.63 $3.22 $2.10 $2.17 $2.14 $2.03 $1.76 $3.19




For the bags of coins, what is the correlation coefficient, r , between "weight" and "value"? Use technology, and round your answer to the nearest hundredth.

A group of students would like to know how well the value of coins in a bag can be predicted based on their weight They collected the following data Weight gram class=
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Respuesta :

Using a calculator, it is found that the correlation coefficient between weight and value is of -0.15.

Correlation coefficient:

  • Has two inputs, which are the sets of values x and y.
  • In this problem, the set x is composed by the weights.
  • The set y is composed by the prices.

Inserting these values in a calculator, it is found that the correlation coefficient between weight and value is of -0.15.

You can learn more about correlation coefficient at https://brainly.com/question/25815006

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