The line graph illustrates information on spending time about manufacturing a refrigerator during three companys between 1990 and 2000.
The time of company C was the highest in 1990 during three companies, at 35 hours. It has a significant drop in following years(about 6 hours).Meanwhile,The trend of company A is similar to that of company C. It began at 30 hours in 1990 and declined steadily to 22 hours in 2000.
In the contrast, the change of company b is not largly significant compared to the other two companies. The figure of company B in 1990 is the lowest,at 22 hours. The trend remain stable during this period .The year of 1995 makes the point at which spending time overtook that for company.
To conclude, it is easy to see that there are remarkable drop the time of both company a and company b. However, the change of company b is not greatly significant during the period.
