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IN RACKET Language Suppose that we have a list containing height/weight pairs for a group of people, in inches and pounds, respectively: ( (76 .
IN RACKET Language
Suppose that we have a list containing height/weight pairs for a group of people, in inches and pounds, respectively:
( (76 . 195) (81 . 212) (79 . 225) (78 . 206) ... )
We would like to know the average height of the people in the group. Use higher-order functions such as map and apply to define a Racket function named average-height. This function takes a list of height/weight pairs as its only argument and returns the the average height of the group. For example:
> (average-height '((79 . 225))) 79.0 > (average-height '((70 . 150) (62 . 100))) 66.0
Code so far
(define average-height (lambda (height-weight-list) 'YOUR-CODE-HERE )) (define average (lambda values (/ (apply + values) (length values)))) ; ----- tests ------- (check-equal? (average-height '((79 . 225))) 79.0) (check-equal? (average-height '((70 . 150) (62 . 100))) 66.0)
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