exam 1 (USE THIS)

Question 1

sample size

Answer 1

makes up a piece of the population

Question 2

population

Answer 2

the whole

Question 3

parameter

Answer 3

a # that describes the population

Question 4

statistic

Answer 4

a # that describes a sample

Question 5

qualitative

Answer 5

labels, categories

Question 6

quantitative

Answer 6

data that can be measured or counted

Question 7

discrete data

Answer 7

of values is countable (no fractions or decimals)

Question 8

continuous data

Question 9

nominal

Answer 9

(qualitative) data that can only be categorized

Question 10

nominal

Answer 10

(qualitative) data that can only be categorized

Question 11

ordinal

Answer 11

(qualitative or quantitative) data that can be categorized and ranked

Question 12

interval

Answer 12

(quantitative) data that can be categorized, ranked, and evenly spaced (zero also represents a position on a scale, not none)

Question 13

ratio

Answer 13

(quantitative) data that can be categorized, ranked, evenly spaced, and 0 represents “none”

Question 14

observational study

Answer 14

observing and measuring characteristics in a part of a population, but no modification occurs

Question 15

experiment

Answer 15

a treatment is applied to a part of a population and responses are observed

Question 16

systematic

Answer 16

every kth # of people

Question 17

stratified

Answer 17

divide population into separate groups of characteristics and then sample

Question 18

convenience

Answer 18

data that is very easy to get

Question 19

random

Answer 19

every person in population has an equal chance of getting selected

Question 20

simple random

Answer 20

multiple random data samples at once

Question 21

cluster

Answer 21

dividing population into groups/clusters physically (north/south)