Which of the following methods of representing statistical data would be most suitable for showing annual production of rice on a month-to-month basis?

Step 1: Analyze the question The data is rice production recorded month by month over a year. This is data that changes over time, so we need a method that shows trends and fluctuations across a continuous period.

Step 2: Concept Different statistical representations serve different purposes:

• Line graph: shows change over time (trends, rises, falls, peaks). It is best for continuous time-series data.
• Pie chart: shows how a whole is divided into parts (percentages or proportions) at one point in time.
• Bar graph: compares quantities between separate categories. It can show time data, but it is better for comparing discrete items.
• Flow chart: shows a process, sequence, or movement (for example, the stages of rice processing, or the flow of goods).

Step 3: Apply to the question

• Monthly production across a year is a time series, so we want to see how output rises and falls from January to December. A line graph connects the monthly points and makes the trend and the peak harvest months obvious.
• A pie chart would only show each month's share of the total, not the trend over time.
• A flow chart is for processes, not numerical data.
• A bar graph could display the monthly figures, but the line graph is the most suitable for showing continuous change month by month.

Step 4: Answer The correct option is A. Line graph.

Exam tip: Remember "Line = Time." If the question talks about change over days, months, or years, think line graph. "Pie = Parts of a whole," "Bar = Compare categories," "Flow = Process."