Five-number summaries are: lowest value, highest value, upper quartile (Q₃), median (Q₂) and lower quartile (Q₁)
The first step is to rearrange each data set in ascending order as shown in the first diagram
The median (Q₂) of each data set is located on the [tex] 5^{th} [/tex] value.
Once the median is located, we then have the set of data on the left and on the right of median where we are going to locate the Q₁ and Q₃.
Q₁ is located in between the [tex] 2^{nd} [/tex] and the [tex]3^{rd} [/tex] value and Q₃ is located between the [tex]7^{th} [/tex] and the [tex]8^{th} [/tex] value.
The box plot of each data set are shown in the second diagram
The box plots aren't symmetric. Box plot for City A tails on the left (negative skew) and box plot for city B also tails on the left (negative skew).
