AP Statistics

A survey explored the relationship between gender and band class. Which is a reasonable conclusion?

• There are more band members than non-band members
• There are more boys in the class than girls
• There are more boys in band than not in band
• More than half of the bands members in the class are girls

What percentage of the days that it rained, did they forecast no rain?

• About 20%
• About 18%
• About 14%
• About 12%

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%

Find the marginal distribution of Females.

• ≈ 49 %

• ≈ 51 %

• ≈ 45 %

• ≈ 55 %

Find the marginal distribution of the Military dependent status .

• ≈ 49%

• ≈ 3%

• ≈ 96%

• ≈ 51%

when averages are taken across different groups, they can appear to contradict the overall averages

• Simpson's Paradox

• Area Principle

• Frequency Distribution

• Marginal Distribution

What percent of females prefer sports cars? This answer is part of what distribution?

• 25%; conditional distribution of car type preference among people of a given gender

• 25%; conditional distribution of gender among people with a particular car type preference

• 18.8%; marginal distribution of gender

• 18.8%; marginal distribution of car type preference

In a two way table of counts, the distribution of values of one of the categorical variables among all individuals described by the table. Totals found in the margins.

• Contingency Table
• Frequency Table
• Marginal Distribution
• Distribution

What percent of students that chose the ability to fly were from the U.S.? 

• 55%
• 21%
• 45%
• 11%

A sample of high school students from the US and the UK were asked to choose their favorite superpower.  What percent of students from the UK selected "Invisibility" for their superpower preference?

• 15%
• 30%
• 55%
• 37%