Probability Using Two Way Tables

How many students are in 8th grade and like History?

• 36

• 45

• 81

• 298

What is the JOINT relative frequency of a female preferring basketball (take the inner cell divided by the grand total)?

• 31%

• 100%

• 52%

• 16%

What is the JOINT relative frequency of a male preferring football (take the inner cell divided by the grand total)?

• 20%

• 48%

• 33%

• 100%

What is the CONDITIONAL relative frequency that a person preferred baseball given they are male? (only look at the male row... divide amount that prefers baseball by total males surveyed)

• 100%

• 0%

• 27%

• 31%

What is the CONDITIONAL relative frequency that a female was surveyed given they prefer basketball? (only look at the basketball column... divide amount of females that prefer basketball by the total people that prefer basketball)

• 100%

• 33%

• 27%

• 52%

How many females were surveyed?

• 48

• 52

• 31

• 36

What is the MARGINAL relative frequency males surveyed (take the margin total divided by the grand total)?

• 52%

• 48%

• 36%

• 31%

What is the MARGINAL relative frequency people who preferred basketball (take the margin total divided by the grand total)?

• 52%

• 48%

• 36%

• 31%

How many females that were surveyed prefer football?

• 23

• 16

• 13

• 52

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%