Box Plots

Front

What is a box plot?

Back

A box plot, also known as a whisker plot, is a graphical representation of a dataset that displays its minimum, first quartile (Q1), median, third quartile (Q3), and maximum values.

Front

What does the median represent in a dataset?

Back

The median is the middle value of a dataset when it is ordered from least to greatest. It divides the dataset into two equal halves.

Front

How do you calculate the interquartile range (IQR)?

Back

The interquartile range (IQR) is calculated by subtracting the first quartile (Q1) from the third quartile (Q3): IQR = Q3 - Q1.

Front

What is the significance of the whiskers in a box plot?

Back

The whiskers in a box plot extend from the quartiles to the minimum and maximum values, showing the range of the data outside the interquartile range.

Front

What does a higher median in a box plot indicate?

Back

A higher median indicates that the central tendency of the data is higher, suggesting that more data points are concentrated at higher values.

Front

What is the mode of a dataset?

Back

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

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 range defined by the whiskers, often calculated as 1.5 times the IQR above Q3 or below Q1.

Front

What does the first quartile (Q1) represent?

Back

The first quartile (Q1) represents the value below which 25% of the data falls.

Front

What does the third quartile (Q3) represent?

Back

The third quartile (Q3) represents the value below which 75% of the data falls.

Front

How do you interpret the spread of data in a box plot?

Back

The spread of data in a box plot is indicated by the length of the box and the whiskers; a longer box or whiskers suggest greater variability in the data.