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Mathematics, 05.05.2020 16:34 cece3467

11. The ages (in years) of 11 children and the number of words in their vocabulary. Find the correlation coefficient r.

Age, x

1

2

3

4

5

6

3

5

2

4

6

Vocabulary size, y

3

220

540

1100

2100

2600

730

2200

260

1200

2500

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