Question

2 a stem and leaf plot includes how many columns? at least two columns at least four columns no columns only one column

Explanation:

A stem - and - leaf plot is used to organize data. The "stem" column represents the leading digit(s) of the data values, and the "leaf" column represents the trailing digit(s). So, a stem - and - leaf plot must have at least two columns (one for the stem and one for the leaf; in some cases, there can be more columns for different groups or additional information, but at least two are required for the basic stem and leaf). The option "At least four columns" is incorrect as two are sufficient. "No columns" is wrong as it has a structure with columns. "Only one column" is incorrect because we need at least one for the stem and one for the leaf.

Answer:

A. At least two columns