Which measure of variability—range or IQR—best describes the spread of the dataset? Social studies group project grades (out of 100 points) for Mr. Chang's first period classSocial studies group project grades (out of 100 points) for Mr. Chang's first period class

• Range; the distribution is skewed, and there are outliers in the dataset.
Range; the distribution is symmetrical, or close to it, and there aren't any outliers in the dataset.

The range measure would best describe the spread of the dataset for Mr. Chang's first period class. Since the distribution is skewed and there are outliers present, the range provides a better indication of the overall variability in the grades compared to the IQR.