AP Stats HW#5

Front

What is the median of the dataset {8, 4, 8, 4, 6, 20, 35, 40}?

Back

Median: 7

Front

What is the mean of the dataset {8, 4, 8, 4, 6, 20, 35, 40}?

Back

Mean: 15.625

Front

What is the mode of the dataset {8, 4, 8, 4, 6, 20, 35, 40}?

Back

Mode: 4 and 8, Mode Type: bimodal

Front

What is descriptive statistics?

Back

Descriptive statistics involves collecting, describing, and presenting data.

Front

Define population in statistics.

Back

Population: the entire group of individuals or instances about whom we hope to learn.

Front

Define sample in statistics.

Back

Sample: a subset of the population used to represent the group.

Front

What is a parameter in statistics?

Back

Parameter: a numerical value that describes a characteristic of a population.

Front

What is a statistic in statistics?

Back

Statistic: a numerical value that describes a characteristic of a sample.

Front

What is the difference between a parameter and a statistic?

Back

A parameter describes a population, while a statistic describes a sample.

Front

What is the mean income of a sample if the mean income of the population is $30,000 and the sample mean is $47,300?

Back

Sample Mean: $47,300, Population Mean: $30,000.