Find the equation of the regression line for the given data. Predict the value of Y when X=-2? Predict the value of Y when X = 4?
Were is the problems?
To find the equation of the regression line and predict values of Y for given X values, we need the data points. Please provide the data points.
To find the equation of the regression line, we first need to calculate the slope and the y-intercept. The equation of a regression line is in the form of y = mx + b, where m is the slope and b is the y-intercept.
Step 1: Calculate the slope (m) of the regression line.
The slope can be calculated using the formula:
m = (nΣ(xy) - ΣxΣy) / (nΣx^2 - (Σx)^2)
where n is the number of data points, Σ represents the sum, x represents the independent variable, and y represents the dependent variable.
Step 2: Calculate the y-intercept (b) of the regression line.
The y-intercept can be calculated using the formula:
b = (Σy - mΣx) / n
Once we have the values of m and b, we can substitute them into the equation y = mx + b to find the equation of the regression line.
Now, let's go through the steps and find the equation of the regression line for the given data.
Please provide the data points.