The regression model that best fit the data set is : Y=10.35-0.0467X
Explanation:
The equation of a regression line is given by;
Y=a+bX where b is the slope of the line a is the y-intercept , Y is the dependent variable and X is the independent variable
The slope b is given by;
b = n(∑xy)-(∑x)(∑y) / n(∑x² )-(∑x)²
a=(∑y)(∑x²)-(∑x)(∑xy) /n(∑x²)-(∑x)²
n is the sample size = 4
Form a table as;
x y xy x² y²
2 13 26 4 169
4 8 32 16 64
5 7.5 37.5 25 56.25
8 12 96 64 144
<u>19 40.5 191.5 109 433.25--------sum</u>
<u></u>
a=(∑y)(∑x²)-(∑x)(∑xy) /n(∑x²)-(∑x)²
a=(40.5)(109) - (19)(191.5) / 4(109) - (19)²
a=(4414.5 - 3638.5) / (436-361)
a=776/75
a=10.35
b = n(∑xy)-(∑x)(∑y) / n(∑x² )-(∑x)²
b=4(191.5)-(19)(40.5) / 4 (109)-19²
b=766-769.5 /436-361
b=-3.5/75
b= - 0.04667
The model will be represented by the equation;
Y=10.35 -0.0466X
Learn More
Regression Model: brainly.com/question/10209928
Keyword : regression, model, best fit, data set
#LearnwithBrainly
Answer:
Lack of power to enforce taxation
Explanation:
The Articles of Confederation couldn't collect money from the states, they could only ask nicely. When the only state that ended up paying taxes was Virginia, Congress was basically broke. They couldn't pay soldiers and had a hard time keeping up with the war.
Answer:
War or a state of emergency
Explanation:
Cuban Missile Crisis? Maybe.
After the slavery was abolished in the south, the type of
cheap labor that the plantations rely on is through sharecropping. This is
considered to be a form of agriculture in which the tenant has been allowed by
a landowner in using his or her land but in exchange of sharing the crops that
the tenants produced on the land.
