Section: Statistics and Models

MATCHING

In the space provided, write the letter of the description that best matches theterm or phrase.

A. flow chart, B. maps and charts, C. 3D representations, D. equations for a system

_______ 1. physical model

_______ 2. graphical model

_______ 3. mathematical model

_______ 4. conceptual model

MULTIPLE CHOICE

Choose the best response. Write the letter of that choice in the space provided.

_______ 5. Scientists use statistics to

a. graph data. c. communicate ideas to each other.

b. analyze data. d. All of the above

_______ 6. 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.

_______ 7. 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

_______ 8. Which model is particularly useful in scientific cases with many variables?

a. physical c. conceptual

b. graphical d. mathematical

_______ 9. 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.

______ 10. The classification and collection of data that are in the form of numbers is called

a. statistics. c. distribution.

b. probability. d. mean.