Peoblem:Scatter plot, correlation and regression
A study was done with a group of university students to determine if there was a correlation between the amounts of sleep they got and their academic performance. The following table lists some data from the study.
Student Hours of Sleep Average Mark
A 6.0 62
B 6.5 58
C 7.0 66
D 6.5 71
E 8.5 76
F 8.0 82
G 9.0 76
H 8.5 75
I 7.0 70
J 7.5 68
K 6.5 56
L 7.5 77
a.Make a scatter plot of the data.
b.Using a graphing calculator, determine the correlation coefficient.
c.What would you conclude about the relationship between the two variables