Relative frequency in a two-way table: all students
Find the total for the group the question asks about, then write the part over that total as a fraction in lowest terms.
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A survey of students found: 12 play a sport and are in the band, 22 play a sport and are not in the band, 20 do not play a sport and are in the band, and 26 do not play a sport and are not in the band. What fraction of all the students play a sport? Write a fraction in lowest terms.
Answer: 17/40
A survey of students found: 21 play a sport and are in the band, 11 play a sport and are not in the band, 31 do not play a sport and are in the band, and 24 do not play a sport and are not in the band. What fraction of all the students play a sport? Write a fraction in lowest terms.
Answer: 32/87
A survey of students found: 17 play a sport and are in the band, 29 play a sport and are not in the band, 27 do not play a sport and are in the band, and 32 do not play a sport and are not in the band. What fraction of all the students play a sport? Write a fraction in lowest terms.
Answer: 46/105
Tip: Find the total for the group the question asks about, then write the part over that total as a fraction in lowest terms.
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