PA: 2.box plots FLASHCARD

Front

What is a box plot?

Back

A box plot is a graphical representation of a data set that displays the median, quartiles, and extremes 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 locate the middle value. If there is an even number of values, average the two middle values.

Front

What is the interquartile range (IQR)?

Back

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

Front

What is the first quartile (Q1)?

Back

The first quartile (Q1) is the median of the lower half of a data set, marking the 25th percentile.

Front

What is the third quartile (Q3)?

Back

The third quartile (Q3) is the median of the upper half of a data set, marking the 75th percentile.

Front

What is the lower extreme of a data set?

Back

The lower extreme is the smallest value in a data set.

Front

What is the upper extreme of a data set?

Back

The upper extreme is the largest value in a data set.

Front

How do you calculate the range of a data set?

Back

The range is calculated by subtracting the smallest value (lower extreme) from the largest value (upper extreme) in the data set.

Front

What does a box plot visually represent?

Back

A box plot visually represents the distribution of a data set, showing the median, quartiles, and any outliers.

Front

What is an outlier in a data set?

Back

An outlier is a value that is significantly higher or lower than the other values in a data set, often identified as being more than 1.5 times the IQR above Q3 or below Q1.