Given the following:
Speed (km/hr) Number of players
10 -13.9 3
14 - 17.9 7
18 - 21.9 19
22 - 25.9 72
26 - 29.9 290
30 - 33.9 171
(a) to find the number of classes
To find the number of class, we use the formuar
K = 1 + 3.3logN
Where = Number of Classes
N = total number of classes
K = 1 + 3.3 log 6
K = 1 + 3.3 (0.7781)
K = 1 + 2.3344
K = 3.3344
(b) We are to find the class limit for the first class.
The class limit is the is the smallest value of the said class. therefore, the The lower class limit for the first class is 10
The upper class limit of the first class is 13.9
c) class width
The class width is the difference between the upper class and the lower class.
Therefore, the class width is:
13.9 - 10 = 3.9
17.9 - 14 = 3.9
So, the class width is 3.9 = 4 (approximately).