BSTAT 2305 Exam 1 questions well
answered graded A+ updated
Summary of important aspects of a data set, collecting data and organizing the data and
presenting it in forms of charts - correct answer ✔✔descriptive statistics
drawing conclusions about a population based on sample data from that population - correct
answer ✔✔inferential statistics
All members of a specified group - correct answer ✔✔Population
a subset of the population - correct answer ✔✔Sample
Sample Statistic - correct answer ✔✔Sample Results
Estimates a population parameter - correct answer ✔✔sample statistic
Obtaining info from entire population is too expensive + it is impossible to examine every
member - correct answer ✔✔What are two reasons we can't use population data?
data collected by recording a characteristic of many subjects at the same point in time, or
without regard to differences in time - correct answer ✔✔Cross Sectional Data
data collected over several time periods, focusing on certain groups of people
- can conclude hourly to annual observations - correct answer ✔✔time series data
, Data that has a defined length, type, and format and includes numbers, dates, or strings such as
Customer Address.
***not open to interpretation - correct answer ✔✔Structured Data
Not defined and does not follow a specified format, tends to be textual - correct answer
✔✔Unstructured Data
a broad term for datasets so large or complex that traditional data processing applications are
inadequate.
—so we use small data sets - correct answer ✔✔Big Data
a characteristic or attribute that can assume different values or degrees among various
observations - correct answer ✔✔Variable
A label or name was to identity distinguishing characteristics - correct answer ✔✔Qualitive
variable
Colors of Cars in parking lots - correct answer ✔✔An example of qualitative data
Racial composition of school - correct answer ✔✔An example of qualitative data
a characteristic that can be measured numerically, either discrete or continuous - correct
answer ✔✔quantitative variable
countable number of values - correct answer ✔✔discrete variable
Uncountable values within an interval - correct answer ✔✔Continuous Variable
answered graded A+ updated
Summary of important aspects of a data set, collecting data and organizing the data and
presenting it in forms of charts - correct answer ✔✔descriptive statistics
drawing conclusions about a population based on sample data from that population - correct
answer ✔✔inferential statistics
All members of a specified group - correct answer ✔✔Population
a subset of the population - correct answer ✔✔Sample
Sample Statistic - correct answer ✔✔Sample Results
Estimates a population parameter - correct answer ✔✔sample statistic
Obtaining info from entire population is too expensive + it is impossible to examine every
member - correct answer ✔✔What are two reasons we can't use population data?
data collected by recording a characteristic of many subjects at the same point in time, or
without regard to differences in time - correct answer ✔✔Cross Sectional Data
data collected over several time periods, focusing on certain groups of people
- can conclude hourly to annual observations - correct answer ✔✔time series data
, Data that has a defined length, type, and format and includes numbers, dates, or strings such as
Customer Address.
***not open to interpretation - correct answer ✔✔Structured Data
Not defined and does not follow a specified format, tends to be textual - correct answer
✔✔Unstructured Data
a broad term for datasets so large or complex that traditional data processing applications are
inadequate.
—so we use small data sets - correct answer ✔✔Big Data
a characteristic or attribute that can assume different values or degrees among various
observations - correct answer ✔✔Variable
A label or name was to identity distinguishing characteristics - correct answer ✔✔Qualitive
variable
Colors of Cars in parking lots - correct answer ✔✔An example of qualitative data
Racial composition of school - correct answer ✔✔An example of qualitative data
a characteristic that can be measured numerically, either discrete or continuous - correct
answer ✔✔quantitative variable
countable number of values - correct answer ✔✔discrete variable
Uncountable values within an interval - correct answer ✔✔Continuous Variable
