Conceptualization:

Frequency Tables

Frequency Tables

• Statistics deals with collecting, organizing, and interpreting data. Data are pieces of information, which are often numerical. Large amounts of data can be organized in a frequency table. A frequency table shows the number of pieces of data that fall within given intervals.

Frequency TablesWords to Know

Price $ Tally Frequency

1-25 4

26-50 11

51-75 7

76-100 13

• Shows the number of pieces of data that fall within given intervals.

Scale- includes the least value and greatest value

Interval- Separates the scale into equal parts

Make a frequency table

• Step 1- Choose an appropriate interval and scale. Should include the least and the greatest value.

• Step 2- Draw a table with 3 columns and label the columns.

• Step 3- Complete the table.

Example

Winning Score• 20 34 23 34 • 31 35 27 49• 30 52 37 20• 55 20 42 39• 46 38 38 27

Scores Tally Frequency

20 - 29

30 - 39

40 - 49

50 - 59

6

9

3

2

Example

Favorite Music• P R F P F • F R F P P• F P F C P• C J R R F• J R P P F• R= rock J= jazz• C= country P= rap• F= top 40

Music Tally Frequency

Rock

Jazz

Country

Top 40

5

2

2

8

Rap 8

Example – Your Turn

Movie Rentals• 10 9 2 17 12 • 9 11 10 4 14• 3 15 0 6 5• 9 20 10 11 8• 3 1 13 4 5

Rentals Tally Frequency

Example – Your Turn

Breakfast Foods• e c e p c c • c p p e c e• c e c p p e

• c= cereal• e= eggs• p=pancakes

Breakfast Tally Frequency