Chapter 14

Question 1

Population:

Answer 1

Any group of objects, not just human populations.

Question 2

Sample:

Answer 2

A subset of a population.

Question 3

Representative sample:

Answer 3

A sample that accurately reflects the characteristics of the population as a whole.

Question 4

Random sample:

Answer 4

A sample in which every member of the population has an equal chance of getting in.

Question 5

Mean:

Answer 5

A statistical average that is determined by adding the numerical values in the data concerning the examined objects, then dividing by the number of objects that were measured.

Question 6

Median:

Answer 6

A statistical average that is determined by locating the value that separates the entire set of data in half.

Question 7

Mode:

Answer 7

A statistical average that is determined by locating the value that occurs most.

Question 8

Standard deviation:

Answer 8

A measure of the amount of diversity in a set of numerical values.

Question 9

What If the Results Are Skewed?

Answer 9

• Not all data are quantifiable; measuring devices may not provide “objective” results.
• Statistical analysis can lead to new questions, new disagreements, new interpretations.