Multiple Choice Identify the
choice that best completes the statement or answers the question.



Section 2  Statistics and Models


1.

Scientists use statistics to
a.  graph data.  b.  analyze data.  c.  communicate ideas to
each other.  d.  All of the above 


2.

To get an accurate result, a sample size must be
a.  small enough to give an accurate estimate for two or more
populations.  b.  large enough to give an accurate estimate for a whole population.  c.  equal to the
mean.  d.  greater than the mean. 


3.

When studying a system, a conceptual model can help scientists understand
a.  what components a system contains.  b.  how the system components affect each
other.  c.  Both (a) and (b)  d.  None of the
above 


4.

Which model is particularly useful in scientific cases with many
variables?
a.  physical  b.  graphical  c.  conceptual  d.  mathematical 


5.

Risk is
a.  the collection of numerical data.  b.  the probability that something wanted will
happen.  c.  the probability that something unwanted will happen.  d.  a group of similar
things of interest to a scientist. 


6.

The classification and collection of data that are in the form of numbers is
called
a.  statistics.  b.  probability.  c.  distribution.  d.  mean. 

Matching



Section 2  Statistics and Models
Choose the letter of
the description that best matches the term or phrase.
a.  a flow chart  b.  includes maps and
charts  c.  threedimensional representation you can touch  d.  equation
representing how a process works 


7.

physical model


8.

graphical model


9.

mathematical model


10.

conceptual model
