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Question text A study was conducted with vegetarians to see if the number of grams of...

Question text

A study was conducted with vegetarians to see if the number of grams of protein each ate per day was related to diastolic blood pressure. The data is given below. What is the correlation coefficient of the regression line that relates protein to diastolic pressurep.
Round to 3 decimals

grm protein 4 6.5 5 5.5 8 10 9 8.2 10.5
dias pressure 73 79 83 82 84 92 88 86 95
0 0
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Answer #1
X Y X⋅Y X⋅X Y⋅Y  
4 73 292 16 5329
6.5 79 513.5 42.25 6241
5 83 415 25 6889
5.5 82 451 30.25 6724
8 84 672 64 7056
10 92 920 100 8464
9 88 792 81 7744
8.2 86 705.2 67.24 7396
10.5 95 997.5 110.25 9025

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