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The data represent the time, in minutes, spent reading a political blog in a day. Construct a frequency distribution using 5 classes. In the table, include the midpoints, relative frequencies, and cumulative frequencies. Which class has the greatest frequency and which has the least frequency?

1 , 6 ,16, 21 ,27,
39, 1,15, 37, 6
15,17,14, 5,5

Complete the table with the lowest class limit. 

Which class has the greatest frequency?

The class with the greatest frequency is from _ to 

Which class has the least frequency?

The class with the least frequency is from _ to _