Chapter 1

Question 1

What does descriptive statistics do?

Answer 1

collect, present, and describe data

Question 2

What does inferential statistics do?

Answer 2

draw conclusions and/or make decisions concerning a population based only on sample data

Question 3

Probability

Answer 3

the chance that a particular event will occur

Question 4

How can we collect, present, and characterize data?

Answer 4

collect - survey, observation, experiments
present - charts and graphs
characterize - sample mean

Question 5

What are the 2 elements that inferential statistics uses?

Answer 5

estimation and hypothesis testing

Question 6

What are 4 types of data collection methods?

Answer 6

experiments
telephone surveys
written questionnaires
direct observation and personal interview

Question 7

Population

Answer 7

a set of all items or individuals of interest

Question 8

Sample

Answer 8

a subset of the population

Question 9

Parameter

Answer 9

a summary measure computed to describe a characteristic of the population

Question 10

Statistic

Answer 10

a summary measure computed to describe a characteristic of the sample