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Researchers were interested in the relationship between age and brain activity. They collected data on 20 subjects using an electroencephalogram (EEG), a device that measures electrical activity in the brain. Data from the EEG are ordinal in nature. Given those data below, are we justified to conclude that brain activity decreases with age? Show all steps in work.

Age	EEG output
20	98
21	75
22	95
24	100
27	99
30	65
31	64
33	70
35	85
38	74
40	68
42	66
44	71
46	62
48	69
51	54
53	63
55	52
58	67
60	55

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Statistics and Probability, Statistics

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