Use the frequency distribution to complete parts (a) through (e).

a) Determine the total number of observations.

b) Determine the width of each class.

c) Determine the midpoint of the second class.

d) Determine the modal class (or classes).

e) Determine the class limits of the next class if an additional class were to be added.

Class	Frequency
1220	8
2129	0
3038	0
3947	9
4856	4
5765	1

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Part 1

a) The total number of observations is

enter your response here.

Part 2

b) The width of each class is

enter your response here.

Part 3

c) The midpoint of the second class is

enter your response here.

(Type an integer or a decimal.)

Part 4

d) The modal class(es) is/are

enter your response here.

(Use a hyphen to separate the limits of a class. Use a comma to separate answers. Type the classes in order from smallest to largest.)

Part 5

e) The class limits of the next class if an additional class were to be added are

enter your response here.

(Use a hyphen to separate the limits of a class.)