What type of charts can effectively display the distribution of a variable's values?

The ability to effectively display the distribution of a variable's values is best achieved with box plots. Box plots visually summarize the central tendency, variability, and frequency of data values by showing the median, quartiles, and potential outliers in a dataset. This characteristic makes them particularly useful for assessing how values are distributed across a variable, highlighting areas of concentration and dispersion.

Bar charts, although useful for comparing categorical data, do not provide insights into the distribution of numerical data as effectively. They summarize data in discrete categories rather than revealing underlying statistical properties like medians or quartiles.

Line charts are typically used to display trends over time, making them unsuitable for illustrating the distribution of values. Their primary focus is on depicting the relationship between two continuous variables rather than the range of a single variable's values.

Scatter plots are great for showing relationships or correlations between two quantitative variables, but they do not summarize the distribution of individual variable values. They represent individual data points, which can sometimes obscure overall distribution trends.

In summary, box plots stand out as the preferred choice for effectively displaying the distribution of a variable's values due to their ability to concisely represent statistical characteristics of the data.