Vocab Review for Test 1

Question 1

population

Answer 1

the entire collection of individuals or objects that you want to learn about

Question 2

sample

Answer 2

a part of the population that is selected for study

Question 3

data

Answer 3

the collected information

Question 4

variability

Answer 4

the differences in the collected data

Question 5

census

Answer 5

a census collects data from EVERYONE in the population

Question 6

selection bias

Answer 6

the way the sample is chosen excludes some part of the population of interest

Question 7

nonresponse bias

Answer 7

when responses aren’t obtained from all the individuals selected to be in the sample

Question 8

response bias

Answer 8

when individuals don’t respond accurately

Question 9

simple random sample (SRS)

Answer 9

a sample where each individual or group of individuals is equally likely to be chosen

Question 10

systematic sampling

Answer 10

obtaining a sample by selecting every nth individual

Question 11

stratified random sampling

Answer 11

obtaining a sample by dividing the population into similar groups and then selecting a SRS from each

Question 12

cluster sampling

Answer 12

divide a population into groups and then select a random sample of clusters and include ALL individuals from those groups to be in the sample

Question 13

convenience sample

Answer 13

using an easily available group to form a sample

Question 14

voluntary response sample

Answer 14

individual volunteer to be part of the sample

Question 15

categorical variable

Answer 15

when the data collected is a word

Question 16

numerical variable

Answer 16

when the data collected is a number