The lowest and highest scores are given below for different sets of scores. In each case, the scores are to be grouped into class intervals. For each, give
(1) the range,
(2) your choice of class interval width,
(3) the score limits for the lowest interval, and
(4) the score limits for the highest interval (do this directly without listing any of the intervals between the lowest and the highest):

a) 36, 62,
b) 27, 101,
c) 56, 69,
d) 187, 821,
e) 6.3, 21.9,
f) 1.27, 3.47.

Question

The lowest and highest scores are given below for different sets of scores. In each case, the scores are to be grouped into class intervals. For each, give 
(1) the range, 
(2) your choice of class interval width, 
(3) the score limits for the lowest interval, and 
(4) the score limits for the highest interval (do this directly without listing any of the intervals between the lowest and the highest):

a) 36, 62,
b) 27, 101,
c) 56, 69,
d) 187, 821,
e) 6.3, 21.9,
f) 1.27, 3.47.

Quizplus · Accepted Answer

The Answer is (a) 26, 2, 36-37, 62-63
(b) 74, 5, 25-29, 100-104 (4 or 6 also satisfactory interval sizes)
(c) 13, 1, 56, 69
(d) 634, 50, 150-199, 800-849 (30, 40, or 60 also satisfactory interval sizes)
(e) 15.6, 1.0, 6.0-6.9, 21.0-21.9
(f) 2.20, .20, 1.20-1.39, 3.40-3.59 (perhaps .10 or .15 would be satisfactory interval sizes).

The Lowest and Highest Scores Are Given Below for Different