Lesson 2 1 Frequency Tables Frequency Tables Statistics

Lesson 2 -1 Frequency Tables

Frequency Tables • Statistics deals with collecting, organizing, and interpreting data. • Data - pieces of information, often numerical. • Frequency table – a way to organize large amounts of data. Shows the number of pieces of data that fall within given intervals.

Frequency Tables Words to Know • 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 Price $ Tally Frequency 1 -25 4 26 -50 11 51 -75 7 76 -100 13

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 6 30 - 39 9 40 - 49 3 50 - 59 2

Example Music • • • Favorite Music P R F P F F R F P P F C P C J R R F J R P P F • R= rock • C= country • F= top 40 J= jazz P= rap Rock Jazz Country Top 40 Rap Tally Frequency

Example – Your Turn Rentals • • • 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 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 Tally Frequency

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