Mathematics
The width of each of nine classes in a frequency distribution is 2.5 and the lower class boundary of the lowest class is 10.6. Which of the following is the upper class boundary of the highest class?
28.1
30.6
33.1
35.6
Related Questions
The class-mark of a class interval is 42. If the class-size is 10, then the upper and lower limits of the class are
47 and 37
47.5 and 37.5
46.5 and 36.5
46 and 36
The following marks were obtained by the students in a test :
81, 72, 90, 90, 86, 85, 92, 70, 71, 83, 89, 95, 85, 79, 62.
The range of marks is :
9
17
27
33
A frequency polygon is constructed by plotting frequency of the class interval and the :
upper limit of the class
lower limit of the class
either (a) or (b)
mid-value of the class