Kim kept track of how much cereal she ate for 2 months and found that she ate 256 ounces of cereal in that time. How many pounds
2 answers:
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The equation of the regression line is =9.1006+(-0.2157)x and the point prediction of ammonium concentration for 25ml/h is
=3.7081
A regression line is an approximation of the line that describes the true, but unknown, linear connection between two variables. The regression line equation is used to predict (or estimate) the value of the response variable from a given value of the explanatory variable.
In statistical modeling, regression analysis is a collection of statistical techniques for estimating the associations between a dependent variable and one or more independent variables.
a) =β₀+β₁x
Where,
β₁=/
-------(1)
Where,
= -341.959231
1585.230769
By substituting these values in equation 1 we get,
β₁= -0.2157
β₀= -β₁x
Where,
=∑
/n
∑=52.8
n=13
Then,
=4.0615
=∑
/n
∑=303.7
n=13
=23.3615
β₀=4.0615-(-0.2157)(23.3615)
=9.1006
Therefore, β₀=9.1006
The regression equation is =9.1006+(-0.2157)x
If x=25,
=9.1006+(-0.2157)(25)
=3.7081
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