Association Two Way Tables

To determine if there an association between grade level and whether or not a student prefers instagram or snapchat, do we calculate a row totals or column totals?

• Row Totals

• Column Totals

Is there an association between grade level and whether or not a student has a driver's license?

• Yes, juniors are more likely to have a license than seniors.

• Yes, seniors are more likely to have a license than juniors.

• No, there is no association between grade level and having a license.

Of the times when the forecast called for rain, what is the percentage that it actually rained?

• About 90%

• About 50%

• About 70%

• About 80%

What is the relative frequency of people that purchased no food?

• 10%

• 60%

• 15%

• 30%

Does this table provide evidence that there is an association between buying a hotdog and buying a drink?

• Yes

• No

How many people purchased no food and no drink?

• 60

• 10

• 20

• 200

What percentage of males drive sports cars?

• 35%

• 16.25%

• 65%

• 25%

What percent of the total population surveyed were electrical engineers that like math?

• 33.9%

• 48.6%

• 16.5%

• 21.7%

According to the table, what is the relative frequency of students ages 10 - 13 who eat breakfast?

• About 33%

• About 50%

• About 40%

• About 44%

Of the mechanical engineers, what is the probability that math is their favorite subject?

• 91

• 52%

• 17%

• 35%