Double Entry Tables

I can construct a two-way table (Tabla Doble Entrada) from a given dataset and calculate marginal and conditional frequencies.

5:00

We don't generate video — this one is by Unknown Channel on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.

“A survey was conducted on students' preferred mode of transportation to school. 60 students prefer the bus, 30 prefer biking, and 10 use both. Create a two-way table to represent this data, with "Prefers Bus" and "Prefers Biking" as categories. Include totals for each row and column. Then, calculate the probability that a randomly selected student prefers biking, given that they also prefer the bus. A local library tracks the types of books borrowed by patrons. 45 patrons borrowed fiction books, 25 borrowed non-fiction books, and 5 borrowed both. Construct a two-way table to represent this data. Include totals for each row and column. Then, calculate the probability that a randomly selected patron borrowed a fiction book, given that they did not borrow a non-fiction book. A gym records the types of exercises performed by its members. 55 members use cardio equipment, 35 lift weights, and 15 do both. Create a two-way table to organize this information. Include totals for each row and column. Then, calculate the probability that a randomly selected member lifts weights, given that they do not use cardio equipment.”

Sample answer included in the free materials