Module 1

Question 1

population of interest

Answer 1

entire collection of individuals

Question 2

sample

Answer 2

subset of a population

Question 3

parameter

Answer 3

numerical summary that describes a characteristics of the population

Question 4

statistic

Answer 4

the numerical summary that describes a characteristic of the sample
-known once the data is observed

Question 5

the “who” of the data

Answer 5

tells us the individual cases about which (or whom) we have collected data
-subjects/participants
-respondents
-experimental units

Question 6

the “what” of the data

Answer 6

characteristic or variable you want info on about each individual

Question 7

types of variables

Answer 7

categorical/qualitative and numerical/quantitative

Question 8

categorical variable

Answer 8

places a subject into one of several groups or categories (or levels)
-nominal or ordinal

Question 9

nominal

Answer 9

have no order

Question 10

ordinal

Answer 10

have an order

Question 11

numerical variable

Answer 11

measures a numerical quantity or amount in each subject
-discrete or continous