he values of x and their corresponding values of y are shown in the table below
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Jul 4, 2024
he values of x and their corresponding values of y are shown in the table below
x 0 1 2 3 4
y 2 3 5 4 6
Find the regression equation of the line y = a + bx
b) Estimate the value of y when x = 10.
Solution by Steps
step 1
To find the regression equation of the line y=a+bx, we first need to perform a linear regression on the given data points: (0,2),(1,3),(2,5),(3,4),(4,6)
step 2
Using the Asksia-LL calculator, we input the data points and obtain the linear regression model: y=0.9x+2.2
step 3
The regression equation is y=0.9x+2.2
step 4
To estimate the value of y when x=10, we substitute x=10 into the regression equation: y=0.9(10)+2.2
step 5
Simplifying the expression: y=9+2.2=11.2
Answer
The regression equation is y=0.9x+2.2. When x=10, y is estimated to be 11.2.
Key Concept
Linear Regression
Explanation
Linear regression is a statistical method used to model the relationship between a dependent variable and one or more independent variables by fitting a linear equation to observed data.