A Kern High School District Task Two-way Tables A Kern High School District Task

How many students are taking a foreign language? Data from a survey of 50 students are shown in the Venn diagram The students were asked whether or not they were taking a foreign language and whether or not they played a sport. How many students are taking a foreign language? How many students play a sport? How many students do both? How many students play a sport but do not take a foreign language? How many students do not play a sport and do not take a foreign language? http://www.glencoe.com/sites/pdfs/impact_math/ls3_c3_two_way_tables.pdf

Is there another way to organize the data?

Two-way table is a tool for representing relationships between categorical variables.

Another way to organize: A two-way table Play a sport Foreign language Not Play a Sport 14 23 50 students No foreign language 10 ? http://www.glencoe.com/sites/pdfs/impact_math/ls3_c3_two_way_tables.pdf

Another way to organize: A two-way table Play a sport Foreign language Not Play a Sport 14 23 No foreign language 10 3 http://www.glencoe.com/sites/pdfs/impact_math/ls3_c3_two_way_tables.pdf

Now can you fill in totals for each row and column

Another way to organize: A two-way table Play a sport Total Foreign language Not Play a Sport 14 23 37 50 students No foreign language 10 3 13 24 26 50 http://www.glencoe.com/sites/pdfs/impact_math/ls3_c3_two_way_tables.pdf

Create a two-way table representing the above data. Matt surveyed students at his school. He found that 82 students have a cell phone and 61 of those have a home computer. There are 11 students that do not own a cell phone, but own a home computer. Nine students don’t own either device. Create a two-way table representing the above data.

Cell Phone vs. Computer Has a Cell No Cell Total Computer No Computer

Cell Phone vs. Computer Has a Cell No Cell Total Computer 61 11 No Computer 9 82

Cell Phone vs. Computer Has a Cell No Cell Total Computer 61 11 72 No Computer 21 9 30 82 20 102

Understanding the chart Has a Cell No Cell Total Computer 61 11 72 No Computer 21 9 30 82 20 102 How many people were surveyed?

Understanding the chart Has a Cell No Cell Total Computer 61 11 72 No Computer 21 9 30 82 20 102 How many people have a computer?

Understanding the chart Has a Cell No Cell Total Computer 61 11 72 No Computer 21 9 30 82 20 102 How many people don’t have a cell phone?

Create a two-way table representing the above data. You observed student eating habits of one hundred 9th and 10th grade students in the school cafeteria. You collected their grade and if they purchased a chicken sandwich or a peanut butter and jelly sandwich. Out of the thirty 9th graders, 20 purchased chicken sandwich. There were 60 students that purchased chicken sandwiches. Create a two-way table representing the above data.

Chicken vs. PB & J Chicken PB & J Total 9th 10th

Chicken vs. PB & J Chicken PB & J Total 9th 20 30 10th 60 100

Chicken vs. PB & J Chicken PB & J Total 9th 20 10 30 10th 40 70 60 100

Understanding the Chart Chicken PB & J Total 9th 20 10 30 10th 40 70 60 100 How many 10th graders were surveyed?

Understanding the Chart Chicken PB & J Total 9th 20 10 30 10th 40 70 60 100 How many 10th graders ordered PB & J?

How did everyone get to school today? Take the data you already collected and create a two-way table comparing their grade level to the method used to get to school