Question

a statistics student wants to determine if there is a relationship between a students number of absences, x, and their grade point average (gpa), y. the given data lists the number of absences and gpas for 15 randomly selected students. using technology, what is the correlation? -0.56 -0.10 0.10 0.56

Explanation:

Step1: Input data into technology

Input the number of absences (\(x\)) and GPA (\(y\)) data into a statistical software or calculator (e.g., TI - 84: STAT → EDIT to enter data in L1 (for \(x\)) and L2 (for \(y\))).

Step2: Calculate the correlation coefficient

Using the STAT → CALC → LinReg(ax + b) (or equivalent function for correlation in other software). The correlation coefficient \(r\) is calculated.

Answer:

-0.56