Flashcard REVIEW - Measures of Center and Spread

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

How do you calculate the mean of a data set?

Back

Add all the numbers together and divide by the total count of numbers.

Front

What is the median of a data set?

Back

The median is the middle value when the numbers are arranged in order.

Front

What is the mode of a data set?

Back

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

Front

What does it mean if a histogram is right skewed?

Back

A right skewed histogram has a longer tail on the right side, indicating that most data points are concentrated on the left.

Front

What is the expected value in statistics?

Back

The expected value is the average of all possible outcomes, weighted by their probabilities.

Front

How do you find the median in an even set of numbers?

Back

For an even set, the median is the average of the two middle numbers.

Front

What is a uniform distribution?

Back

A uniform distribution is one where all outcomes are equally likely.

Front

What is the difference between population and sample in statistics?

Back

A population includes all members of a specified group, while a sample is a subset of the population.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points in specified ranges.