Statistics Review

Front

What is the Mean Absolute Deviation (MAD)?

Back

The Mean Absolute Deviation (MAD) is a measure of the average distance between each data point and the mean of the data set.

Front

How do you calculate the range of a data set?

Back

The range is calculated by subtracting the smallest value in the data set from the largest value.

Front

What is the Interquartile Range (IQR)?

Back

The Interquartile Range (IQR) is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set, representing the middle 50% of the data.

Front

How do you find 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, average the two middle values.

Front

What is a data set?

Back

A data set is a collection of related values or observations, often organized in a table or list.

Front

What does it mean if a data set is skewed?

Back

A data set is skewed if it is not symmetrical, meaning one tail is longer or fatter than the other, affecting the mean and median.

Front

What is a quartile?

Back

A quartile is a type of quantile that divides a data set into four equal parts, with Q1 being the first 25%, Q2 the median, and Q3 the first 75%.

Front

What is the mode of a data set?

Back

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

Front

What is a box plot?

Back

A box plot is a graphical representation of a data set that shows the median, quartiles, and potential outliers.

Front

What is an outlier?

Back

An outlier is a data point that is significantly different from the other values in a data set, often lying outside 1.5 times the IQR.