The table below shows the practice test scores and real test scores of 4 students. How does the mean practice test score compare to the mean real test score?
Scores on the Practice Test and Real Test
Student Practice Test Real Test
Jeff
60
70
Peter
75
90
John
55
55
Mary
80
95
Mean Practice 67.5 & Mean Real 77.5
Mean Practice 66.5 & Mean Real 77