SOLUTION: For the 20 test scores shown, find the percentile rank for a score of 86. 75 63 92 74 86 50 77 82 98 65 71 89 75 66 87 59 70 83 91 73 Help!

Algebra ->  Percentages: Solvers, Trainers, Word Problems and pie charts -> SOLUTION: For the 20 test scores shown, find the percentile rank for a score of 86. 75 63 92 74 86 50 77 82 98 65 71 89 75 66 87 59 70 83 91 73 Help!      Log On


   

Question 150615: For the 20 test scores shown, find the percentile rank for a score of 86.
75
63
92
74
86
50
77
82
98
65
71
89
75
66
87
59
70
83
91
73
Help!
Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!

For the 20 test scores shown, find the percentile rank for a score of 86.
75
63
92
74
86
50
77
82
98
65
71
89
75
66
87
59
70
83
91
73
Help!

Formula:

Percentile_rank=%28%28Number_of_lower_scores%29%2F%28Total_number_of_scores%29%29%2A100%

1. Arrange the scores from highest to lowest:

98
92
91
89
87
86
83
82
77
75
75
74
73
71
70
66
65
63
59
50

2. Count all the ones that are lower than 86.

Number_of_lower_scores=14

Total_number_of_scores=20



86 is at the 70th percentile! 

Edwin