When Data Are Collected Using a Qualitative,nominal Variable,what Is True

Multiple Choice

When data are collected using a qualitative,nominal variable,what is true about a frequency table that summarizes the data?

A) The upper and lower class limits must be calculated.
B) A pie chart can be used to summarize the data.
C) The number of classes is equal to the number of variable's values plus 2.
D) The "5 to the k rule" can be applied.