in a data set with a Bell curve, statistically significant data is__________________________standard deviation.

A > + / - 1

B> + / -2

C > + / -3

D > + / -4

This type of graph is more effective in showing relationships between different groups.

A line

B pie

C bar

D table

When calculating statistical information on a population it is important the__________________ is representative of that population.

a median

b selected sample

c distribution

d size