You are watching: In the least-squares regression line, the desired sum of the errors (residuals) should be
A positive correlation coefficient indicates that big worths of x are associated through __________ worths of y.
In regression evaluation, the variable that is being predicted is dubbed the _______________ variable.
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When tbelow is not a significant connection between the variables, the worth of r will be approximately
1.+ r suggests + association and also - rindicates - association between variables.2.r is constantly in between -1 and 1.3. The closer |r| is to 1, the stronger the association. A weak association will have an r worth close to 0.4. Correlation is strongly influenced by outliers
Typically, the bigger the correlation (either positive or negative) between the variables for the straightforward straight regression version, the (better, worse) ____________ will certainly be the predictions of y for given values of x.
is a line that defines the relationship in between the explanatory variable x and also the response variable y
For the simple direct regression model, if all the points on a scatter plot lie in a straight line through correlation coeffective r = -1, then the slope of the regression line is
When we are estimating y based upon values of x that are a lot bigger or a lot smaller sized than the rest of the data
square of the correlation r- It is the fraction of the variation in the values of y that is defined by the regression line and also the explanatory variable
14. The correlation in between 2 scores X and Y equals 0.8. If both the X scores and the Y scores are converted to z-scores, then the correlation between z-scores for X and z-scores for Y would certainly be
errorsvalue is the difference in between an actual oboffered y worth and the correspondingpredicted y value
consists of individuals from thepopulace chosen in such a method that every collection of people has actually anequal possibility to be the sample actually selected
features of the people in a sample that are not measured during the study, however do impact the result