Box plots, dot plots and Histograms

Front

What is a box plot?

Back

A box plot, or box-and-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 box plot?

Back

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

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), representing the range of the middle 50% of the data.

Front

How do you identify skewness in a box plot?

Back

Skewness in a box plot can be identified by the length of the whiskers and the position of the median; if the median is closer to Q1, the data is skewed right, and if it's closer to Q3, it's skewed left.

Front

What is a dot plot?

Back

A dot plot is a simple graphical display that uses dots to represent individual data points along a number line.

Front

How can you determine the shape of data in a dot plot?

Back

The shape of data in a dot plot can be determined by observing the distribution of dots; for example, if the dots are clustered on one side, the data may be skewed.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, where the data is divided into bins, and the height of each bar represents the frequency of data points in that bin.

Front

What does it mean if data is skewed right?

Back

If data is skewed right, it means that the majority of the data points are concentrated on the left side of the distribution, with a long tail extending to the right.

Front

What is the lower quartile (Q1)?

Back

The lower quartile (Q1) is the median of the lower half of a dataset, representing the 25th percentile.

Front

What is the upper quartile (Q3)?

Back

The upper quartile (Q3) is the median of the upper half of a dataset, representing the 75th percentile.