STAT 101- Exam One (Ch. 1-8) Iowa
State questions and answers already
passed
Statistics - correct answer ✔✔Understanding data and making informed decisions in the face of
uncertainty; examine and understand variability to make decisions
Data - correct answer ✔✔Pieces of information collected about cases (people, place, thing) and
is only meaningful in context
Five W's of data - correct answer ✔✔Who, What, When, Where, Why, How
Who - correct answer ✔✔people, places and things information was gathered on
What - correct answer ✔✔The info/characteristics gathered
When - correct answer ✔✔The time period in which data was collected
Where - correct answer ✔✔Source of the data
Why - correct answer ✔✔Goals/purpose of gathering the data
How - correct answer ✔✔Methods used to collect this data
Categorical Variables - correct answer ✔✔Recorded as labels, take on different categories and
must choose from an option
, Quantitative Variables - correct answer ✔✔Recorded and used as numbers, take on numeric
values, measurement units (years, lbs, number)
Cases - correct answer ✔✔Who, rows
Variables - correct answer ✔✔What, columns
Summarize the distribution of the categorical variable with: - correct answer ✔✔Frequency
table, pie chart, and bar chart
Frequency table - correct answer ✔✔Allows us to see various answers from a survey and how
it's distributed
Pie Chart - correct answer ✔✔Comparing sizes of pie slices, add up to 100%
Bar Chart - correct answer ✔✔Order does not matter, measure height for differences
Contingency Table - correct answer ✔✔Look at various distributions for our variables
Count - correct answer ✔✔The number of observations belonging to a particular category, If
you divide this count by the total number, it's called a proportion
Frequency/ Relative frequency table - correct answer ✔✔Summary of the distribution of one
categorical variable containing the number and proportion of observations belonging to each
category. Contains counts and proportions
State questions and answers already
passed
Statistics - correct answer ✔✔Understanding data and making informed decisions in the face of
uncertainty; examine and understand variability to make decisions
Data - correct answer ✔✔Pieces of information collected about cases (people, place, thing) and
is only meaningful in context
Five W's of data - correct answer ✔✔Who, What, When, Where, Why, How
Who - correct answer ✔✔people, places and things information was gathered on
What - correct answer ✔✔The info/characteristics gathered
When - correct answer ✔✔The time period in which data was collected
Where - correct answer ✔✔Source of the data
Why - correct answer ✔✔Goals/purpose of gathering the data
How - correct answer ✔✔Methods used to collect this data
Categorical Variables - correct answer ✔✔Recorded as labels, take on different categories and
must choose from an option
, Quantitative Variables - correct answer ✔✔Recorded and used as numbers, take on numeric
values, measurement units (years, lbs, number)
Cases - correct answer ✔✔Who, rows
Variables - correct answer ✔✔What, columns
Summarize the distribution of the categorical variable with: - correct answer ✔✔Frequency
table, pie chart, and bar chart
Frequency table - correct answer ✔✔Allows us to see various answers from a survey and how
it's distributed
Pie Chart - correct answer ✔✔Comparing sizes of pie slices, add up to 100%
Bar Chart - correct answer ✔✔Order does not matter, measure height for differences
Contingency Table - correct answer ✔✔Look at various distributions for our variables
Count - correct answer ✔✔The number of observations belonging to a particular category, If
you divide this count by the total number, it's called a proportion
Frequency/ Relative frequency table - correct answer ✔✔Summary of the distribution of one
categorical variable containing the number and proportion of observations belonging to each
category. Contains counts and proportions
