Question

The following data describes percentage of satisfied customers at Joe's Used Cars. Complete the frequency table for this data. 84.7, 94.4, 97.0, 97.6, 79.4, 97.2, 92.8, 82.1, 95.1, 87.2, 96.3, 97.1, 78.9, 94.9, 81.3, 82.6, 87.0, 82.6 Determine the frequency of each class in the table shown.

Answer Percentage of Satisfied Customers at Joe's Used Cars Class Frequency 78.0–81.9 Answer 82.0–85.9 Answer 86.0–89.9 Answer 90.0–93.9 Answer 94.0–97.9 Answer

Answer 1

First, arrange the data in ascending order

78.9, 79.4, 81.3, 82.1, 82.6, 82.6, 84.7, 87.0, 87.2, 92.8, 94.4, 94.9, 95.1, 96.3, 97.0, 97.1, 97.2, 97.6

now, count the number of data values in each class and note down in the table to get the frequency

Class	Frequency
78.0-81.9	3
82.0-85.9	4
86.0-89.9	2
90.0-93.9	1
94.0-97.9	8