Which of the following methods of graphical representation of data would be useful for showing trends?

Correct option is B

A line chart (or line graph) is the most effective method for showing trends over time. It displays data points connected by lines, making it ideal for observing patterns, fluctuations, and trends in a dataset over a period.

• Line charts are commonly used to represent:
  • Stock market trends
  • Temperature variations over time
  • Population growth trends
  • Sales revenue changes over months or years

Information Booster 

• Bar charts –  Not ideal for trends

  • Bar charts are used for comparing categories rather than showing trends over time.
  • Example: Comparing the sales revenue of different products in a specific year.

• Box plots –  Not used for trends

  • Box plots (box-and-whisker plots) display data distribution, outliers, and variability rather than trends.
  • Example: Comparing exam scores of students across different groups.

• Pie charts –  Not used for trends

  • Pie charts represent proportions of a whole but do not indicate changes over time.
  • Example: Showing the percentage share of different industries in GDP for a given year.