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When you use your regression line to predict values that are not in the sample and discovered large residual values in each prediction what can you say about your regression line?
Wiki User
∙ 11y ago
There are several possible explanations: Leaving aside the two most obvious reasons: calculation error and attempted extrapolation, there are the following possibilities:
The true relationship is non-linear.
A relevant variable has been missed omitted.
The observations are very variable: leading to a very large residual error.
There is not enough variation in the independent (or predictive) variable so that Sxx is very small.
Wiki User
∙ 11y ago
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Explain the concept of correlation and regression line as a forecasting tool?
once an equation for a regression is derived it can be used to predict possible future
What are the noun and adverb forms of predict?
The noun forms of the verb to predict are predictor, prediction, and the gerund, predicting.The adverb form is predictably.
How to estimate your adult hight?
You can use the online prediction height calculator to predict the adult height.
What Is a procedure which allows us to predict an individual's score on one variable based on knowing one or more other variables?
regression analysis
Why is it important to know the regression line?
Yes, that is what allows you to predict data values based on the information you have. It also tells you other things about the data set such as the correlation.
What type of graph can best help you predict the answer to information you never tested?
A scatter graph on the data you already have, then place a regression line ( line of best fit) across the points and predict the information based on this line. It obviously isn't accurate and is only a prediction and if there is no correlation in the plotted points and no line of best fit can be placed on there can be no prediction made.
What is the meaning of prediction?
of Predict
What is the root of prediction?
Predict. To predict means to tell what will happen in the future, while still in the present. Literally, to tell before. A prediction is the thing that is predicted. Predict is the verb root word and prediction is the noun form.
How do you predict outcome in a story?
by prediction
What is the root word of prediction?
Predict. To predict means to tell what will happen in the future, while still in the present. Literally, to tell before. A prediction is the thing that is predicted. Predict is the verb root word and prediction is the noun form.
In regression analysis the independent variable is?
used to predict the dependent variable
What is the term for two things that predict each other?
correlation, or regression
Explain the concept of correlation and regression line as a forecasting tool?
once an equation for a regression is derived it can be used to predict possible future
How could Mendeleevs table be used to predict the properties of elements that had not been discovered?
Comparing the properties of the new element with the properties of the other elements in the group we can make this prediction.
What is the prefix of prediction?
"Pre" is the prefix of "predict".
What are the verb noun adjective adverb forms of predict?
To predict = the verbprediction = noun; a thing predicted; a forecastpredictor= noun; something/someone which/who has the capability to predictpredictive, predictable= adjectives; in measure to predict something/ to be predictedpredictively, predictably= the adverb
What is the scientic meaning of predict?
To tell or declare beforehand; to foretell; to prophesy; to presage; as, to predict misfortune; to predict the return of a comet., A prediction.
