Populations & statistics homework

Front

What is the population mean?

Back

The population mean is the average of all values in a population, calculated by summing all values and dividing by the number of values.

Front

How do you calculate the median of a data set?

Back

To find the median, arrange the data in ascending order and identify the middle value. If there is an even number of values, the median is the average of the two middle values.

Front

What is the term for the entire collection or group of individuals being studied in statistics?

Back

Population.

Front

How do you calculate the population standard deviation?

Back

The population standard deviation is calculated by taking the square root of the variance, which is the average of the squared differences from the mean.

Front

What is the formula for calculating the mean of a population?

Back

Mean = (Sum of all values) / (Number of values).

Front

What is a sample in statistics?

Back

A sample is a subset of individuals selected from a larger population, used to make inferences about the population.

Front

What is the difference between a parameter and a statistic?

Back

A parameter is a numerical value that describes a characteristic of a population, while a statistic is a numerical value that describes a characteristic of a sample.

Front

How do you find the mode of a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

What is the range of a data set?

Back

The range is the difference between the highest and lowest values in a data set.

Front

What does it mean if a data set is skewed?

Back

A skewed data set is one where the values are not symmetrically distributed, leading to a longer tail on one side.