Solution Found!
Constructing a Frequency Distribution In Exercise,
Chapter 2, Problem 29E(choose chapter or problem)
Problem 29E
Constructing a Frequency Distribution In Exercise, construct a frequency distribution for the data set using the indicated number of classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency?
Political Blog Reading Times
Number of classes: 5
Data set: Times (in minutes) spent reading a political blog in a day
7 |
39 |
13 |
9 |
25 |
8 |
22 |
0 |
2 |
18 |
2 |
30 |
7 |
35 |
12 |
15 |
8 |
6 |
5 |
29 |
0 |
11 |
39 |
16 |
15 |
Questions & Answers
QUESTION:
Problem 29E
Constructing a Frequency Distribution In Exercise, construct a frequency distribution for the data set using the indicated number of classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency?
Political Blog Reading Times
Number of classes: 5
Data set: Times (in minutes) spent reading a political blog in a day
7 |
39 |
13 |
9 |
25 |
8 |
22 |
0 |
2 |
18 |
2 |
30 |
7 |
35 |
12 |
15 |
8 |
6 |
5 |
29 |
0 |
11 |
39 |
16 |
15 |
ANSWER:
Solution
Step 1 of 2
We have to construct a frequency distribution with midpoint, relative frequency and cumulative frequency and also identify the class with highest frequency and the class with lowest frequency
Here Mid point is the middle value of the class interval
Relative frequency=
Cumulative frequency means the total of the frequencies up to that particular class
From the given data the frequency distribution is
Class interval |
Frequency |
Mid point |
Relative frequency |
Cumulative frequency |
0-8 |
8 |
4 |
0.32 |
8 |
8-16 |
8 |
12 |
0.32 |
16 |
16-24 |
3 |
20 |
0.12 |
19 |
24-32 |
3 |
28 |
0.12 |
22 |
32-40 |
3 |
36 |
0.12 |
25 |
Total |
25 |
1 |