D AY 58 – D ATA T ABLES
V OCABULARY Two-way Frequency Tables are a visual representation of the possible relationships between two sets of categorical data. Two-way Relative Frequency Tables displays percentage or ratios instead of just frequency counts, these table can show relative frequencies for the whole table, for rows, or for columns.
P ROBLEM Survey asked students, “What food would you prefer when having your recess?” Two-Way Frequency Table Cakes Fruits Candies Totals Male 10 8 6 Female 12 5 9 Totals
How many people responded to the survey? 1. How many males responded to the survey? 2. How many people chose FRUITS? 3. How many females chose CANDIES? 4. How many males chose CAKES? 5.
P ROBLEM Survey asked students, “What food would you prefer when having your recess?” Two-Way Relative Frequency Table Cakes Fruits Candies Totals Male 10 8 6 Female 12 5 9 Totals
P ROBLEM What percentage of the survey takers was 1. female? What is the relative frequency of males choosing 2. a CANDIES? Was there a higher percentage of males or 3. females choosing CAKES ?
A NSWER K EY Two-Way Frequency Table Cakes Fruits Candies Totals Male 10 8 6 24 Female 12 5 9 26 Totals 22 13 15 50
A NSWER K EY Two-Way Relative Frequency Table Cakes Fruits Candies Totals 10 = 0.2 8 = 0.16 6 = 0.12 24 = 0.48 Male 50 50 50 50 12 = 0.24 5 = 0.1 9 = 0.18 26 = 0.52 Female 50 50 50 50 22 = 0.44 13 = 0.26 15 = 0.3 50 = 1 Totals 50 50 50 50
How many people responded to the survey? 50 1. How many males responded to the survey? 24 2. How many people chose FRUITS? 13 3. How many females chose CANDIES? 5 4. How many males chose CAKES? 10 5.
What percentage of the survey takers was 1. female? 50% What is the relative frequency of males choosing 2. a CANDIES? 12% Was there a higher percentage of males or 3. females choosing CAKES ? Higher percentage of females
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