Univariate data can be effectively displayed using histograms.
Univariate data, which involves the analysis of a single variable, can be effectively displayed using the following options:
B) Histograms. Histograms are particularly useful for representing the distribution of a single variable by dividing the data into intervals (bins) and showing the frequency or count of observations in each interval. While bar graphs can also represent univariate data, histograms are specifically designed for continuous data and are more suitable for visualizing the distribution of values. Pie charts are typically used for categorical data, and scatterplots are used for bivariate data to show the relationship between two variables.