STAT200 Exam 1 Review Packet Chapter
1 fully solved already passed
Statistics - correct answer ✔✔a collection of procedures and principles for gathering data and
analyzing information to help people make decisions on when they are faced with uncertainty
statistically significant - correct answer ✔✔a relationship or difference that is large enough to
be unlikely to have occurred in the sample if here was no relationship or difference in the
population
Raw data - correct answer ✔✔numbers and category labels that have been collected but have
not been processed in anyway
- if you ask a sampling of people questions, the answers to those questions will be raw data until
the data are processed.
variable - correct answer ✔✔characteristic that can potentially differ from one person to the
next
observational unit (observation) - correct answer ✔✔an individual entity in a study, such as a
person
-an individual measurement can also be referred to as an observation
sample size (n) - correct answer ✔✔the total number of observational units in a study
-this could be something like the total number of people surveyed in a study
,dataset - correct answer ✔✔the complete set of raw data in a survey or experiment
-a dataset includes raw data for all observational units and variables
-each row in a dataset gives the data for one observational unit, and each column gives the raw
data for a particular variable
sample data - correct answer ✔✔when data has only been collected from a subset of a
population
statistic - correct answer ✔✔a summary measure of sample data
sample estimate - correct answer ✔✔another term for a number that describes a sample
population data - correct answer ✔✔when data has been collected from all individuals in a
population
parameter - correct answer ✔✔summary measure of population data
census - correct answer ✔✔when data is collected from all members of a population
categorical variable - correct answer ✔✔raw data made up of group or category names that
don't have any logical order
ex: eye color, sex, dominant hand
-each individual normally falls into one category
, ordinal variable - correct answer ✔✔used to describe data when a categorical variable can be
put into some natural order
ex: rate your stay at this hotel "Extremely happy", "neutral", "dissatisfied"
quantitative variable - correct answer ✔✔values that come in meaningful, non-arbitrary
numbers
ex: height, weight, age
continuous variable - correct answer ✔✔describes quantitative data when every value within a
given interval is a possible response
ex: height
discrete variable - correct answer ✔✔has a countable list of possibilities for its value
ex: number of people when have green eyes in a sample of 20 people
observational study - correct answer ✔✔participants are observed and measured
randomized experiment - correct answer ✔✔a study where treatments are randomly assigned
to participants
treatment - correct answer ✔✔a specific method or procedure assigned to participants by the
person conducting the experiment
1 fully solved already passed
Statistics - correct answer ✔✔a collection of procedures and principles for gathering data and
analyzing information to help people make decisions on when they are faced with uncertainty
statistically significant - correct answer ✔✔a relationship or difference that is large enough to
be unlikely to have occurred in the sample if here was no relationship or difference in the
population
Raw data - correct answer ✔✔numbers and category labels that have been collected but have
not been processed in anyway
- if you ask a sampling of people questions, the answers to those questions will be raw data until
the data are processed.
variable - correct answer ✔✔characteristic that can potentially differ from one person to the
next
observational unit (observation) - correct answer ✔✔an individual entity in a study, such as a
person
-an individual measurement can also be referred to as an observation
sample size (n) - correct answer ✔✔the total number of observational units in a study
-this could be something like the total number of people surveyed in a study
,dataset - correct answer ✔✔the complete set of raw data in a survey or experiment
-a dataset includes raw data for all observational units and variables
-each row in a dataset gives the data for one observational unit, and each column gives the raw
data for a particular variable
sample data - correct answer ✔✔when data has only been collected from a subset of a
population
statistic - correct answer ✔✔a summary measure of sample data
sample estimate - correct answer ✔✔another term for a number that describes a sample
population data - correct answer ✔✔when data has been collected from all individuals in a
population
parameter - correct answer ✔✔summary measure of population data
census - correct answer ✔✔when data is collected from all members of a population
categorical variable - correct answer ✔✔raw data made up of group or category names that
don't have any logical order
ex: eye color, sex, dominant hand
-each individual normally falls into one category
, ordinal variable - correct answer ✔✔used to describe data when a categorical variable can be
put into some natural order
ex: rate your stay at this hotel "Extremely happy", "neutral", "dissatisfied"
quantitative variable - correct answer ✔✔values that come in meaningful, non-arbitrary
numbers
ex: height, weight, age
continuous variable - correct answer ✔✔describes quantitative data when every value within a
given interval is a possible response
ex: height
discrete variable - correct answer ✔✔has a countable list of possibilities for its value
ex: number of people when have green eyes in a sample of 20 people
observational study - correct answer ✔✔participants are observed and measured
randomized experiment - correct answer ✔✔a study where treatments are randomly assigned
to participants
treatment - correct answer ✔✔a specific method or procedure assigned to participants by the
person conducting the experiment
