The following time-series data shows the average number of vacation days taken each year by employees.
$$\begin{array} { l l }
2010 & 22 \
2011 & 25 \
2012 & 26 \
2013 & 29 \
2014 & 24 \
2015 & 21 \
2016 & 22 \
2017 & 20 \
2018 & 19
\end{array}$$
The most effective visualization of these data would be:
A)a pie chart going chronologically clockwise.
B)a bar chart with most recent year to the left.
C)a line chart with most recent year to the right.
D)a bar chart with the highest average to the left
E)a line chart with the highest average to the right.

Question

The following time-series data shows the average number of vacation days taken each year by employees. 
$$\begin{array} { l l } 
2010 & 22 \
2011 & 25 \
2012 & 26 \
2013 & 29 \
2014 & 24 \
2015 & 21 \
2016 & 22 \
2017 & 20 \
2018 & 19
\end{array}$$
The most effective visualization of these data would be:
A)a pie chart going chronologically clockwise.
B)a bar chart with most recent year to the left.
C)a line chart with most recent year to the right.
D)a bar chart with the highest average to the left
E)a line chart with the highest average to the right.

Quizplus · Accepted Answer

A line chart with the most recent year to the right is the most effective way to visualize time-series data, as it clearly shows trends over time.