Straighterline Introduction to Statistics
Exam Questions with correct answers
Four |steps |in |the |process |of |statistics |- |VERIFIED |ANSWER✔✔-1. |Producing |Data
2. |Exploratory |Data |Analysis
3. |Probability
4. |Inference
Categorical |variable |- |VERIFIED |ANSWER✔✔-places |individuals |into |one |of |several |groups
Two |types: |nominal |and |ordinal
Quantitative |Variable |- |VERIFIED |ANSWER✔✔-represents |a |measurement |or |a |count
Two |types: |Interval |and |ratio
Nominal |Variable |- |VERIFIED |ANSWER✔✔-categorical |variables |where |there |is |no |natural |order |
among |the |categories
Ordinal |variable |- |VERIFIED |ANSWER✔✔-categorical |variables |where |there |is |natural |order |among |the
|categories
Interval |Variable |- |VERIFIED |ANSWER✔✔-a |measurement |or |count |for |which |it |makes |sense |to |talk |
about |the |difference |between |values, |but |it |does |not |make |sense |to |talk |about |the |ratio |between |
values; |0 |does |not |represent |the |absence |of |quanitity
Ratio |Variable |- |VERIFIED |ANSWER✔✔-quantitative |variables |for |which |it |makes |sense |to |talk |about |
the |difference |between |values |AND |the |ratio |between |values; |0 |represents |the |absence |of |quantity
What |type |of |variable?:
eye |color |- |VERIFIED |ANSWER✔✔-nominal
, What |type |of |variable?:
socioeconomic |status |with |categories |low, |med, |high |- |VERIFIED |ANSWER✔✔-Ordinal
What |type |of |variable?:
Temperature |- |VERIFIED |ANSWER✔✔-Interval
What |type |of |variable?:
Income |- |VERIFIED |ANSWER✔✔-Ratio
Visual |display |and |numerical |summary |for |a |single |categorical |variable |- |VERIFIED |ANSWER✔✔-pie |
chart |or |bar |chart
and |category |percentages
Visual |display |and |numerical |summary |for |a |single |quantitative |variable |- |VERIFIED |ANSWER✔✔-
histogram |or |stemplot
| and |descriptive |statistics
Visual |display |and |numerical |summary |for |C->C |- |VERIFIED |ANSWER✔✔-Two |way |table |and |
conditional |percentages
Visual |display |and |numerical |summary |for |C->Q |- |VERIFIED |ANSWER✔✔-Side |by |side |box |plots |and |
descriptive |statistics
Visual |display |and |numerical |summary |for |Q->Q |- |VERIFIED |ANSWER✔✔-Scatterplot |and |correlation |
coefficient |(r)
Standard |Deviation |Rule |- |VERIFIED |ANSWER✔✔-Approximately |
68% |of |observations |fall |within |1 |sd |of |the |mean, |
95% |within |2 |sd, |
99.7% |(or |virtually |all) |within |3 |sds
Exam Questions with correct answers
Four |steps |in |the |process |of |statistics |- |VERIFIED |ANSWER✔✔-1. |Producing |Data
2. |Exploratory |Data |Analysis
3. |Probability
4. |Inference
Categorical |variable |- |VERIFIED |ANSWER✔✔-places |individuals |into |one |of |several |groups
Two |types: |nominal |and |ordinal
Quantitative |Variable |- |VERIFIED |ANSWER✔✔-represents |a |measurement |or |a |count
Two |types: |Interval |and |ratio
Nominal |Variable |- |VERIFIED |ANSWER✔✔-categorical |variables |where |there |is |no |natural |order |
among |the |categories
Ordinal |variable |- |VERIFIED |ANSWER✔✔-categorical |variables |where |there |is |natural |order |among |the
|categories
Interval |Variable |- |VERIFIED |ANSWER✔✔-a |measurement |or |count |for |which |it |makes |sense |to |talk |
about |the |difference |between |values, |but |it |does |not |make |sense |to |talk |about |the |ratio |between |
values; |0 |does |not |represent |the |absence |of |quanitity
Ratio |Variable |- |VERIFIED |ANSWER✔✔-quantitative |variables |for |which |it |makes |sense |to |talk |about |
the |difference |between |values |AND |the |ratio |between |values; |0 |represents |the |absence |of |quantity
What |type |of |variable?:
eye |color |- |VERIFIED |ANSWER✔✔-nominal
, What |type |of |variable?:
socioeconomic |status |with |categories |low, |med, |high |- |VERIFIED |ANSWER✔✔-Ordinal
What |type |of |variable?:
Temperature |- |VERIFIED |ANSWER✔✔-Interval
What |type |of |variable?:
Income |- |VERIFIED |ANSWER✔✔-Ratio
Visual |display |and |numerical |summary |for |a |single |categorical |variable |- |VERIFIED |ANSWER✔✔-pie |
chart |or |bar |chart
and |category |percentages
Visual |display |and |numerical |summary |for |a |single |quantitative |variable |- |VERIFIED |ANSWER✔✔-
histogram |or |stemplot
| and |descriptive |statistics
Visual |display |and |numerical |summary |for |C->C |- |VERIFIED |ANSWER✔✔-Two |way |table |and |
conditional |percentages
Visual |display |and |numerical |summary |for |C->Q |- |VERIFIED |ANSWER✔✔-Side |by |side |box |plots |and |
descriptive |statistics
Visual |display |and |numerical |summary |for |Q->Q |- |VERIFIED |ANSWER✔✔-Scatterplot |and |correlation |
coefficient |(r)
Standard |Deviation |Rule |- |VERIFIED |ANSWER✔✔-Approximately |
68% |of |observations |fall |within |1 |sd |of |the |mean, |
95% |within |2 |sd, |
99.7% |(or |virtually |all) |within |3 |sds
