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Use the given frequency distribution to find the 
(a) class width. 
(b) class midpoints 
(c) class boundaries

Temperature (0 F) Frequency
32 - 34 1
35 - 37 3
38 - 40 5
41 - 43 11
44 - 46 7
47 - 49 7
50 - 52 1

 

a.

The class width can be obtained by subtracting the lower class limit of a class from that of a subsequent class. 

class width = 35 - 32 = 3

The class midpoints;- 33, 36, 39, 42, 45, 48, 51

Class boundaries;-  31.5, 33.5, 36.5, 39.5, 42.5, 45.5, 48.5, 51.5

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