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Q: How do you find the equation of the line of best fit?
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How can you use a scatter plot to find an equation of a trend line?

By finding the line of best fit and using the straight line equation formula.


When you find the equation for the line of best fit how would you justify your answer?

you go home


Which is the best equationof a line of best fit this scatterplot?

A straight line equation


The line of best fit has the equation equals -1.5 plus 2.5x What does this equation predict for a value of x equals 3?

6The line of best fit has the equation = -3 + 2.5x. What does this equation predict for a value of x = 3?Answer: 4.5


Does the line of best fit have to be straight?

Not necessarily. Often it is, but the line of best fit is simply an equation that closely matches the results. Therefore any line could be a line of best fit, linear, quadradic, or even cubic! The sky (and the results) are the limit.


How can a line of best fit be useful?

It is very useful and interesting to be able to enter data for two variables, graph those points in a scatter plot, and then generate a line of best fit through those points. From the line of best fit, it is fairly simple to generate a linear equation. A line of best fit is drawn through a scatterplot to find the direction of an association between two variables. This line of best fit can then be used to make predictions.


Hi you are doing a Chemistry lab report and you are told to find the equation for the best fit line The equation found was y equals 6E-0.5x plus 0.0029 what does the E mean for this equation?

Exponent


Can you make a linear equation from a nonlinear table?

Using the line of best fit, yes.


How relevant is linear equation to a firm?

The line of best fit is used to predict future decisions.


What is the difference between a trend line and a line of best fit?

A trend line is graphed from a linear, exponential, logarithmic or other equation, and trys to fit the sorted data that you have. But it may or may not be correlated. The line of best fit is the trend line that best fits your data, having a high correlation. R closer to 1.


How do you find a line of best fit from scatter plot?

The line of best fit is simply the line that shows the general direction of the graph. The trick is to make the line go through as many points on the graph as possible. Some scatter plots have no line of best fit.


What is the equation that shows the relationship among certain quantities?

The answer depends on the quantities and the nature of the relationship. It can be a line-of-best-fit (or regression line), or a formula.