Final answer:
The true statement about charts is that they can help us understand both individual variables' distributions and relationships among variables.Option a,d.
Step-by-step explanation:
The correct statement about charts is: Charts can help us understand individual variables' distributions and relationships among variables. Charts are versatile tools in visualizing data and can help in understanding both individual variables and their relationships. Taking specific chart types as examples:
Histograms show the frequency distribution of a single variable, demonstrating how often different ranges of values occur within the data set.
Scatter plots are utilized to reveal the relationship and correlation between two variables, showing how one variable is affected by another.
Line graphs represent the relationship between two variables, with one measured on the horizontal axis and the other on the vertical axis, often used to illustrate trends over time.
A pie graph displays how a whole is divided into parts, illustrating the proportional allocation of categories or percentages of a total.
A bar graph uses the height of bars to show the relationship between categories, and each bar can represent an entity or be divided into segments to show subgroups.
These charts are not just limited to representing a single variable but are quite powerful in showing complex relationships and interactions among multiple variables. Option a, d.