Chapter 11

Question 1

Skewed left

Answer 1

Most of the data is on the right

Question 2

Symmetric

Answer 2

Data has normal distribution

Question 3

Skewed right

Answer 3

Most data is in the left

Question 4

Population

Answer 4

The entire group that you want to collect data from/know about

Question 5

Sample

Answer 5

A part or a subset of the population that you look at/study

Question 6

Parameter

Answer 6

A number that describes the population

Question 7

Statistic

Answer 7

A number that describes the sample

Question 8

Random sample

Answer 8

Each member of the population has an equal chance of getting selected

Question 9

Self-selected sample

Answer 9

Members of the population can volunteer to be in the sample

Question 10

Systematic sample

Answer 10

A rule is used to select members of a population. For instance, selecting every other person.

Question 11

Stratified sample

Answer 11

population is divided into smaller groups that share a similar characteristic. A sample is then randomly selected from each group.

Question 12

Cluster sample

Answer 12

a population is divided into groups, called clusters. All of the members in one or more of the clusters are selected.

Question 13

Convenience sample

Answer 13

Only people nearby or easy to reach are surveyed

Question 14

Experiment

Answer 14

imposes treatment on subjects

Question 15

Observational study

Answer 15

observes subjects without getting involved

Question 16

Survey

Answer 16

subjects are asked one or more questions

Question 17

Simulation

Answer 17

a model used to stimulate outcomes that closely match real-world outcomes

Question 18

Percentages

Answer 18

.15,2.35,13.5,34,34,13.5,2.35,.15

Question 19

Z-formula

Answer 19

(Given-mean)/standard Deviation