Stat Sentence Starters

scatterplot

There is a [strong/weak] [positive/negative] [shape] association between [x-context] and [y-context]. There [do/do not] appear to be any outliers.

correlation (r)

There is a [strength], [direction] linear relationship between [variable] & [variable].

slope of a regression line (b)

As [explanatory variable] increases by one unit, the predicted [response variable] increases by [b] [units].

y-intercept of a regression line (a)

When [x-context] is 0, the predicted [y-context] is [a] [units].

predicted value (y-hat)

[y-hat] is the predicted value of [response variable y] when [explanatory variable] is [input amount]

residual

the actual/true [y-context] is [higher/lower] than the predicted [y-context] by [residual]

standard deviation of the residuals

When using the LSRL, the predicted number of [y-context] is typically [s units] off from the actual number

coefficient of determination (r²)

About [r²]% of the variability in [y-context] is accounted for by the LSRL