# How To Find Y Hat = A + Bx

**Y a bx Where a and b are constants a is the y intercept ie.**

**How to find y hat = a + bx**.
This is also known as simple linear regression.
Find x and y.
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Using excel or statistical analysis generate the regression equation of your data set. Round your answers for a and b to three decimal places. Interpretation of a and b in yabx.

The Least-squares Trend Inference calculator computes the value of the dependent variable Y based on the intercept a the slope b and a value of X. Then find the equation of the least-squares line y a bx. The formula for those unfamiliar with it probably looks underwhelming even more so given the fact that we already have the values for Y and X in our example.

Y a bx cx 2 0 231 -20p -4p 2. To estimate the mean and total of y -values denoted as μ and τ one can use the linear relationship between y and known x -values. There are a wide variety of reasons to pick one equation form over another and certain disciplines tend to pick one to the exclusion of the other.

Since price cannot be negative the value of -105 can be eliminated. The lower left to the upper right of the diagram has the equation Y abX. An equation of a line can be expressed as y mx b or y ax b or even y a bx.

Y a bX v This is a linear equation. Subsitute y for lnY a for lnA and v for lnu in lnY lnA bX lnu and you get. A If b 0 the line slopes upward to the right.