The sales manager at Western Furniture Company tracked data on the number of customers who came into the store each day and the total dollar volume of sales at the store during the same day. She is considering putting together a report for top management and wishes to show the relationship between these two variables. Which of the following graphs would likely be most useful? She has a sample of 36 days worth of data.

Question

BlackTom AI · Accepted Answer

To explore the relationship between two quantitative variables across days, we should consider graphs that display how one variable changes with respect to the other.
Option 1: Scatter diagram. This plot places one variable on the x-axis and the other on the y-axis, allowing us to visually assess the strength, direction, and form of the relationship between daily foot traffic (customers) and daily sales dollars. With 36 days of data, a scatter plot is a standard, informative choice for correlation or regression-type analyses.
Option 2: Frequency histogram. Histograms show the distribution of a single variable, such as the number of customers per day or total sales per day, but they do not reveal how one variable relates to another directly. They are great for identifying skewness, modality, or outliers within one variable, not the association between two variables.
Option 3: Bar chart. Bar charts compare categories or aggregate values across discrete groups. Since both variables here are numeric and measured continuously across days, a bar chart would not efficiently illustrate their joint relationship; it would instead convey comparisons across days or aggregated summaries that miss the scatter-like pattern.
Option 4: Pie chart. Pie charts display parts of a whole for categorical data and proportional shares, not relationships between two numerical measurements collected over time. They would obscure any potential correlation and are poorly suited for showing how daily customers relate to daily sales.
In summary, for investigating the relationship between two quantitative daily measures, a scatter diagram is the most appropriate tool among the given options, whereas histograms, bar charts, and pie charts serve different purposes related to distributions, category comparisons, or part-to-whole representations rather than bivariate relationships.

OSC 2030-009 Fall 2025 Exam 1

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OSC 2030-009 Fall 2025 Exam 1

View Explanation

Log in for full answers

Similar Questions

Which of the following will graphically show whether there is relationship between two variables?

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