Scatter diagram is drawn to study:

Correct option is D

Ans. (d) Relationship between two given variables
Sol.
A scatter diagram (also known as a scatter plot) is a graphical representation used to study the relationship between two quantitative variables. Each point on the graph represents the values of the two variables for a specific data point. The x-axis and y-axis represent the two variables being compared. The pattern of the points can help identify trends, correlations, or the strength of the relationship between the two variables.
Explanation of Incorrect Options:
· (a) Trend of a variable over a period of time – Incorrect ❌
· A scatter diagram is not primarily used to track the trend of a variable over time. Line charts or time series plots are typically used to show trends over time.
· (b) Frequency of occurrence of events – Incorrect ❌
· A scatter diagram does not display frequency of occurrence. Histograms or bar charts are better suited for representing frequency distributions.
· (c) Mean and median values of given data – Incorrect ❌
· Scatter diagrams are not used to calculate mean or median values. They are graphical tools to observe the relationship between two variables, while mean and median are statistical measures of central tendency.
Conclusion:
The correct answer is (d) because scatter diagrams are used to visualize the relationship between two given variables and help identify patterns or correlations.