Topic: Frequency Histograms

Skill: Organize list into frequency table

Given: An unorganized list of numbers and a frequency table including classes

Task: Count the frequencies

A researcher for an automobile insurance company obtains the following sample of the ages (in years) of drivers killed in motor vehicle accidents.

18 37 28 30 20 17 65 16 87 51 18 29 51 37 27 69 17 73 34 38

• 18
• 37
• 28
• 30
• 20
• 17
• 65
• 16
• 87
• 51
• 18
• 29
• 51
• 37
• 27
• 69
• 17
• 73
• 34
• 38

The list above is not finished. Purpose: allow user to strikethrough each number.

Determine the frequency of each class. Remember frequency is always a whole number. Enter 0 if the frequency is 0. Blank answers are NOT the same as zero. Enter whole numbers in the 'My Answers' column. Click the 'Grade My Answers' button when you have entered whole numbers for each class.

Frequency Table: Classes are presented in two formats. The answers are the same using either format. Use the format you prefer.

Classes in Grindle's format	Classes in Triola's format	of Frequency
Age (Years)	Age (Years)	My Answers	Correct Answers	My Grades
[5 , 15)	5 - 14
[15 , 25)	15 - 24
[25 , 35)	25 - 34
[35 , 45)	35 - 44
[45 , 55)	45 - 54
[55 , 65)	55 - 64
[65 , 75)	65 - 74
[75 , 85)	75 - 84
[85 , 95)	85 - 94
[95 , 105)	95 - 104