Within Geometric Reasoning, Data Analysis, and Probability, which is an example skill?

• A. Calculating the area of a triangle
• B. Finding the x-intercept of a line
• C. Creating a scatter plot
• D. Finding the mean, median, mode, and range from a data set

Answer: (D)

In data analysis, a common skill is summarizing a set of numbers to describe what the data show. Finding the mean, median, mode, and range gives a concise picture of a data set’s center and spread. The mean provides the average value, the median marks the middle value when the data are ordered, the mode is the most frequent value, and the range shows how far apart the smallest and largest values are. Together, these statistics help you understand the overall pattern of the data and compare it to other sets, without needing to draw a graph or solve equations. The other options focus on geometric reasoning (like area of shapes) or algebraic graphing (like intercepts), or on data visualization (like making a scatter plot), which are different kinds of skills.