Box and Whisker Plots and Dot Plots

Front

What is a Box and Whisker Plot?

Back

A Box and Whisker Plot is a graphical representation of a dataset that shows its minimum, first quartile (Q1), median, third quartile (Q3), and maximum values.

Front

What does the term 'quartile' mean?

Back

A quartile is a type of quantile that divides a dataset into four equal parts, with each part containing 25% of the data.

Front

How do you calculate the range of a dataset?

Back

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

Front

What is the median in a dataset?

Back

The median is the middle value when the data is arranged in ascending order. If there is an even number of observations, it is the average of the two middle values.

Front

What is the purpose of a dot plot?

Back

A dot plot is a simple graphical display that uses dots to represent the frequency of data points in a dataset.

Front

How do you find the lower quartile (Q1)?

Back

The lower quartile (Q1) is the median of the lower half of the dataset, excluding the median if the number of data points is odd.

Front

What does the upper quartile (Q3) represent?

Back

The upper quartile (Q3) represents the median of the upper half of the dataset, indicating that 75% of the data points fall below this value.

Front

How can you determine the interquartile range (IQR)?

Back

The interquartile range (IQR) is calculated by subtracting the lower quartile (Q1) from the upper quartile (Q3). IQR = Q3 - Q1.

Front

What is a key feature of a Box and Whisker Plot?

Back

A key feature is that it visually displays the spread and skewness of the data, highlighting outliers and the overall distribution.

Front

How do you interpret a dot plot?

Back

In a dot plot, each dot represents one observation. The number of dots above a value indicates the frequency of that value in the dataset.