Need explaination for the two questions: The beautyof using a stem-and-leaf plot is that A.) the rawdata is preserved and displayed B.) it can be...

Need explaination for the two questions:

The beautyof using a stem-and-leaf plot is that

A.) the rawdata is preserved and displayed

B.) it can be used when you have less than five data values

C.) One can calculate the mean and standard deviation usinga simple $15 calculator

D.) It not only shows correlation, it also shows causation

What is anadvantage of using a stem and leaf plot over a histogram

A.)  It uses averages instead of individualmeasurements, and averages vary less than individuals

B.)    The raw data is preserved andpresented<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

C.)   It makes the underlying source of variationvisable

D.)  It accounts for a shift in the mean