Sophia stats milestone 4 complete solutions graded A + latest questions and answers 2024/2025

Sophia stats milestone 4 complete solutions graded A +
latest questions and answers 2024/2025

,Sophia stats milestone 4 complete solutions graded A + latest questions
and answers 2024/2025




.

The table below shows the grade and reading level for 5 students.

Grade Reading Level
Student 1 2 6
Student 2 6 14
Student 3 5 12
Student 4 4 10
Student 5 1 4


For grade, the mean is 3.6 and the standard deviation is 2.1.
For reading level, the mean is 9.2 and the standard deviation is 4.1.

Using the formula below or Excel, find the correlation coefficient, r, for this set of students. Answer choices
are rounded to the nearest hundredth.




1.00



0.85



0.71

, Sophia stats milestone 4 complete solutions graded A + latest questions
and answers 2024/2025
0.92

RATIONALE
In order to get the correlation, we can use the formula:




Correlation can be quickly calculated by using Excel. Enter the values and use the function "=CORREL(".




2

This scatterplot shows the maintenance expense for a truck based on its years of service.