Two-way tables: joint, marginal and conditional relative frequencies
Grade 9 Math Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
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Two-way table of students
Reusable bottle No bottle Total 9th grade 12 9 21 10th grade 16 13 29 Total 28 22 50 Ari's table sorts 50 students. The water fountain feels popular. What percent of all 50 students are in 9th grade and bring a reusable bottle?
Two-way table of seedlings
Flowered No flowers Total Sunny window 16 6 22 Shady shelf 10 8 18 Total 26 14 40 Bo's table sorts 40 seedlings. One seedling leans toward the window. What percent of all 40 seedlings grew on the shady shelf and flowered?
Two-way table of students
Entered the fair Did not enter Total Art class 20 27 47 No art class 25 8 33 Total 45 35 80 Jun's table sorts 80 students. Paint got on everyone's shoes. What percent of all 80 students do not take an art class and did not enter the fair?
Two-way table of volunteers
Planted a tree Picked up litter Total Morning shift 19 21 40 Afternoon shift 15 25 40 Total 34 46 80 Kira made a table of 80 volunteers. The park squirrels approve. What percent of all 80 volunteers worked the morning shift?
Two-way table of campers
Flew a kite Went swimming Total Cabin A 20 6 26 Cabin B 6 8 14 Total 26 14 40 Luz made a table of 40 campers. One kite landed in a tree twice. What percent of all 40 campers went swimming?
Two-way table of students
Reusable bottle No bottle Total 9th grade 7 20 27 10th grade 11 12 23 Total 18 32 50 Milo made a table of 50 students. The water fountain feels popular. What percent of all 50 students are in 10th grade?
Noah made a table of 50 students. The review session had orange slices. What percent of all 50 students passed the quiz?
Two-way table of seedlings
Flowered No flowers Total Sunny window 28 12 40 Shady shelf 17 24 41 Total 45 36 81 Pia counted seedlings in a two-way table. One seedling leans toward the window. Of the 40 seedlings in the "Sunny window" row, what percent flowered?
Two-way table of students
Entered the fair Did not enter Total Art class 21 7 28 No art class 12 11 23 Total 33 18 51 Ren counted students in a two-way table. Paint got on everyone's shoes. Of the 28 students in the "Art class" row, what percent entered the art fair?
Two-way table of campers
Flew a kite Went swimming Total Cabin A 14 26 40 Cabin B 8 30 38 Total 22 56 78 Zee counted campers in a two-way table. One kite landed in a tree twice. Of the 40 campers in the "Cabin A" row, what percent flew a kite?