Final answer:
A PivotChart report graphically represents data and should be examined carefully as it can be influenced by various design choices, such as data selection and axis scaling. Line graphs, pie charts, and bar charts each serve different purposes, appropriate for showing trends, parts of a whole, and group comparisons respectively.
Step-by-step explanation:
A PivotChart report represents source data as a graphic. Graphs provide a visual perspective on data and can leave different impressions based on choices made in their creation, such as data inclusion, time frames, grouping, and axes scaling. It's important to approach graphs with a level of scrutiny and understand that they can be open to interpretation. In particular, three common types of graphs are the line graph, pie chart, and bar chart. Line graphs are most appropriate for showing trends over time, pie charts effectively demonstrate parts of a whole, and bar charts are useful for comparing different groups. PivotCharts are used to analyze and visualize data in a more interactive and dynamic way.