how do you find the equation of a line of best fit? please help!!

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how do you find the equation of a line of best fit? please help!!

Mathematics
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Do you have a graph?
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i dont know what steps to do in order to find the equation of the line of best fit
look for the y-intercept first. If the equation is in the form y=mx+b, b is the y-intercept, which is the point the line crosses the graph
-5.4
Next look for the slope, m, which is \[\frac{y2-y1}{x2-x1}\]
do i get 2 ploted points?
If you have plotted points, then you can substitute them into that equation for slope
after that do i just plug the slope and the y-intercept into the equation?
if you know the slope and the y-intercept, you can identify the graph
ok thank you so much
np
:)
the mean of your xs and the mean of your ys will be a point on the line of best fit \[(\bar x,\bar y)\] is on the line so we just need to determine a good slope to use
i cant recall how the average slope is obtained; personally I just use excel to calculate the slopes and pick the average fromthe interquartile range ..... but thats not "proper" :)

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