Francis Galton used the regression analysis to study the relationship between the heights of about _________.
A
100 fathers and sons
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B
500 fathers and sons
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C
200 fathers and sons
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D
1000 fathers and sons
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Solution
The correct option is C 1000 fathers and sons Francis Galton used the regression analysis to show that the heights of descendants of tall ancestors tend to regress down towards a normal average and for this, he took 1000 fathers and sons in consideration.