AP Statistics

What does this symbol represent?

• sample mean
• population standard deviation
• population mean
• sample mew

What does this symbol represent?

• parameter
• sample proportion
• parameter of a population
• population proportion

What does this symbol represent?

• population proportion
• parameter
• sample proportion
• population sample

What does this symbol represent?

• mean of the parameter
• mean of a population
• mean of a sample
• mean of a proportion

What does this symbol represent?

• population mean
• population standard deviation
• parameter standard error
• proportion standard deviation

At a particular college, 78% of all students are receiving some type of financial aid.The school newspaper selects a random sample of 100 students and 72% of the respondents say they are receiving some sort of financial aid. Which of the following is true?

•  78% is a population and 72% is a sample.
• 72% is a population and 78% is a sample
• 78% is a parameter and 72% is a statistic
• 72% is a parameter and 78% is a statistic

What does this symbol represent?

• mean of the sample means
• mean of the proportions
• standard deviation of the means
• standard deviation of x-bar

A statistic is biased if...

• the value of the statistic from any sample is NOT equal to the parameter
• The value of the statistic from any sample IS equal to the parameter
• The mean of the sampling distribution is NOT equal to the true value of the parameter
• The mean of the sampling distribution IS equal to the value of the parameter.

What does this symbol represent?

• mean of the sample proportions
• proportion of samples
• mean of the means
• standard deviation of the samples

If you had to choose a "best statistic" to describe a population, which of the following would be best.

• low bias, high variability
• high bias, high variability
• low bias, low variability
• high bias, low variability