Box/Whisker Plots & Stem-Leaf Plots

Front

What is a Box Plot?

Back

A Box Plot, or Box-and-Whisker Plot, is a graphical representation of a dataset that displays the median, quartiles, and extremes of the data. It helps visualize the distribution and identify outliers.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Front

What does the term 'interquartile range' (IQR) mean?

Back

The interquartile range (IQR) is the difference between the first quartile (Q1) and the third quartile (Q3) in a dataset. It measures the spread of the middle 50% of the data.

Tags

CCSS.6.SP.B.5C

Front

How do you find the median in a dataset?

Back

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

Tags

CCSS.6.SP.B.5C

Front

What is a Stem-and-Leaf Plot?

Back

A Stem-and-Leaf Plot is a method of displaying quantitative data in a graphical format, similar to a histogram, that retains the original data values. Each number is split into a 'stem' (the leading digit(s)) and a 'leaf' (the trailing digit).

Front

What does the term 'quartile' refer to?

Back

A quartile is a type of quantile that divides a dataset into four equal parts. The first quartile (Q1) is the median of the lower half, the second quartile (Q2) is the median of the dataset, and the third quartile (Q3) is the median of the upper half.

Tags

CCSS.6.SP.B.5C

Front

How do you determine the first quartile (Q1)?

Back

To find Q1, arrange the data in ascending order and find the median of the lower half of the dataset.

Tags

CCSS.6.SP.B.5C

Front

What is the purpose of a Box Plot?

Back

The purpose of a Box Plot is to provide a visual summary of the central tendency, variability, and distribution of a dataset, making it easier to compare different datasets.

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

Front

What does the 'whisker' in a Box Plot represent?

Back

The 'whisker' in a Box Plot extends from the quartiles to the minimum and maximum values of the dataset, excluding outliers.

Tags

CCSS.HSS.ID.A.1

CCSS.6.SP.B.4

Front

How can you identify outliers in a Box Plot?

Back

Outliers in a Box Plot are typically represented as individual points that fall outside the whiskers, which are calculated as 1.5 times the IQR above Q3 and below Q1.

Tags

CCSS.HSS.ID.A.1

CCSS.6.SP.B.4

Front

What is the maximum value in a dataset?

Back

The maximum value is the largest number in a dataset.

Tags

CCSS.HSS.ID.A.1

CCSS.6.SP.B.4