Final answer:
To analyze the sales trends between different vehicle types during recession periods, plot different lines for each type and examine their patterns and slopes.
Step-by-step explanation:
To plot different lines for categories of vehicle type and analyze the trend, you can use a line plot or a line graph. The x-axis can represent the recession periods (years) and the y-axis can represent the sales values.
Each vehicle type can be represented by a different line.
By examining the slopes and patterns of the lines, you can determine if there is a noticeable difference in sales trends between different vehicle types during recession periods.
For example, let's say you have data for three vehicle types: cars, trucks, and motorcycles. You plot the sales values for each type over the recession periods.
The lines for cars and motorcycles show a steady decline in sales during recessions, while the line for trucks shows a slight increase in sales.
This indicates that there is a difference in sales trends between vehicle types during recession periods.