ch 1 vocab

Question 1

data collected from an entire population

Answer 1

parameter/population

Question 2

data collected from a sample of the group being studied

Answer 2

statistic/sample

Question 3

a claim about a characteristic of a population

Answer 3

hypothesis

Question 4

members of a population volunteers to be in a sample

Answer 4

self-selected

Question 5

each member of population has equal chance of being selected

Answer 5

random sample

Question 6

rule used to select members of a population (like every 5th person that enters the room)

Answer 6

systematic sample

Question 7

population divided into smaller groups that share a similar characteristic. Sample randomly selected from each group.

Answer 7

stratified sample

Question 8

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

Answer 8

cluster sample

Question 9

only members of a population who are easy to reach are selected

Answer 9

convenience sample

Question 10

an error that results in a misrepresentation of a population

Answer 10

bias

Question 11

to avoid a biased result do a…

Answer 11

random sample

Question 12

sample that will be representative of the population you want information about

Answer 12

unbiased

Question 13

participants are given a treatment in order to collect data on how they react to the treatment

Answer 13

experiment

Question 14

two separate groups are studied under the same conditions with one key difference
ONE GROUP IS UNDER TREATMENT
OHER GROUP IS NOT UNDER TREATMENT

Answer 14

controlled experiment

Question 15

given sometimes, fake pills told its the real pill

Answer 15

placebo

Question 16

process of randomly assigning subjects to different treatment groups

Answer 16

randomization

Question 17

subjects randomly assigned to control group or treatment group

Answer 17

randomization comparative experiment