bar charts illustrate the number of complaints received by Green Lavo, a computer manufacturer, in the years 1996, 2006 and 2016, categorized by products, staff, delivery, and other reasons.
Overall, product-related complaints consistently represented the largest proportion in all three years, while issues concerning staff and delivery fluctuated. The category “others” remained the least common source of complaints throughout the period.
In 1996, product complaints were at their highest, with about 120 cases, far exceeding other categories. This figure declined steadily to around 100 in 2006 and then to roughly 85 in 2016, though it still accounted for the majority. Staff-related complaints followed a similar downward trend, dropping from around 80 in 1996 to 60 in 2006, before reaching 40 in 2016.
By contrast, complaints regarding delivery rose over time. Starting at approximately 30 in 1996, they increased to about 40 in 2006 and doubled to 80 by 2016, making this category the second most significant source of dissatisfaction by the end of the period. Complaints categorized as “others” remained low and relatively stable, fluctuating slightly between 20 and 25 across the three years.
In summary, while complaints about products and staff gradually decreased over the two decades, delivery-related problems became increasingly prominent, narrowing the gap with product complaints by 2016.