Summarising numerical data: the median, range, IQR and box plots
6
6.5
7
8
9
3.5
11.5
15
22
43
Minimum = 10, Q1 = 30, Median = 45, Q3 = 52, Maximum = 100
Minimum = 10, Q1 = 30, Median = 46, Q3 = 51, Maximum = 100
Minimum = 10, Q1 = 30, Median = 45, Q3 = 51.5, Maximum = 100
Minimum = 10, Q1 = 30, Median = 45, Q3 = 51, Maximum = 100
50% of students spent between 30 and 51 dollars
25% of students spent less than $35
25% of students spent more than $50
75% of students spent less than $50
True
False
Both categorical variables
Both numerical variables
A categorical and a numerical variable respectively
A numerical and a categorical variable respectively
Neither numerical nor categorical variables
Dot plot
Bar chart
Segmented bar chart
Histogram
Back-to-back stem plot
The above box plot has a symmetric distribution.
The above box plot has a negatively skewed distribution.
The above box plot has a positively skewed distribution.
The above box plot has an increasingly positive distribution.