USING AND INTERPRETING
CONCEPTS
Constructing a Frequency Distribution In Exercises 29 and 30, 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?
29. Political Blog Reading Times
Number of classes: 5
Data set: Time (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
30. Book Spending
Number of classes: 6
Data set: Amount (in dollars) spent on books for a semester
91 472 279 249 530 376 188 341 266 199
142 273 189 130 489 266 248 101 375 486
190 398 188 269 43 30 127 354
84