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5 votes
What did Galton use to calculate how strong the relationship was for the line of best fit?

2 Answers

1 vote
The regression line was named after the work Galton did in gene ... into slope-intercept form (y = mx + b) for easy use on the graphing
calculator.
User Fito Von Zastrow
by
7.7k points
1 vote
The correlation coefficient. 
User Dogoku
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8.1k points