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Scientists wish to determine if there is a positive linear relationship between height and arm span.
Which of the following would give us evidence of a positive relationship between these variables in a sample of $40$ random subjects?
The correlation coefficient being close to $-1$.
The p-value in a linear regression T-test being close to $0$ when testing
$H_o : B = 0$$H_a: B > 0$
A residual plot that shows the data points haphazardly scattered.
A slope in the LSRL close to $1$.
A scatterplot without any influential points or outliers.