MGSC 291 Exam 1 (Walters) QUESTIONS |\ |\ |\ |\ |\ |\
WITH ANSWERS |\
Descriptive Statistics - CORRECT ANSWERS ✔✔Collecting,
|\ |\ |\ |\ |\ |\
summarizing, and presenting data |\ |\ |\
Inferential Statistics - CORRECT ANSWERS ✔✔drawing
|\ |\ |\ |\ |\ |\
conclusions about a population based on sample data from that
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
population
Parameter - CORRECT ANSWERS ✔✔a number used to describe a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
population
Statistic - CORRECT ANSWERS ✔✔a number calculated from a
|\ |\ |\ |\ |\ |\ |\ |\ |\
sample and is used to estimate the parameter
|\ |\ |\ |\ |\ |\ |\
Time Series - CORRECT ANSWERS ✔✔variables that are measured
|\ |\ |\ |\ |\ |\ |\ |\
at regular intervals over time (hourly, daily, weekly, monthly,
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
quarterly, annual...) |\
Cross-Sectional Data - CORRECT ANSWERS ✔✔several variables |\ |\ |\ |\ |\ |\ |\
are all measured at the same time point (or time frame)
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Big Data - CORRECT ANSWERS ✔✔Data warehouses that have
|\ |\ |\ |\ |\ |\ |\ |\ |\
grown enormously in size, with the use of powerful computers,
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
, the information contained in them is accessible and used to help
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
make decisions |\
Discrete variables - CORRECT ANSWERS ✔✔jumps between
|\ |\ |\ |\ |\ |\ |\
possible values |\
continuous variable` - CORRECT ANSWERS ✔✔another possible |\ |\ |\ |\ |\ |\ |\
value between any two values |\ |\ |\ |\
Nominal variables - CORRECT ANSWERS ✔✔categorical variables
|\ |\ |\ |\ |\ |\ |\
for which the categories do not have a natural ordering
|\ |\ |\ |\ |\ |\ |\ |\ |\
Ordinal Variables - CORRECT ANSWERS ✔✔categorical variables
|\ |\ |\ |\ |\ |\ |\
for which the categories have a natural ordering
|\ |\ |\ |\ |\ |\ |\
boxplots - CORRECT ANSWERS ✔✔For quantitative data
|\ |\ |\ |\ |\ |\ |\
works for small to large datasets
|\ |\ |\ |\ |\
plots the five number summary
|\ |\ |\ |\ |\
great for side-by-side comparisons
|\ |\ |\
R code for boxplots - CORRECT ANSWERS ✔✔boxplot()
|\ |\ |\ |\ |\ |\ |\
Histogram - CORRECT ANSWERS ✔✔medium to large quantitative|\ |\ |\ |\ |\ |\ |\
datasets
|\ |\
Bins touch |\ |\
WITH ANSWERS |\
Descriptive Statistics - CORRECT ANSWERS ✔✔Collecting,
|\ |\ |\ |\ |\ |\
summarizing, and presenting data |\ |\ |\
Inferential Statistics - CORRECT ANSWERS ✔✔drawing
|\ |\ |\ |\ |\ |\
conclusions about a population based on sample data from that
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
population
Parameter - CORRECT ANSWERS ✔✔a number used to describe a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
population
Statistic - CORRECT ANSWERS ✔✔a number calculated from a
|\ |\ |\ |\ |\ |\ |\ |\ |\
sample and is used to estimate the parameter
|\ |\ |\ |\ |\ |\ |\
Time Series - CORRECT ANSWERS ✔✔variables that are measured
|\ |\ |\ |\ |\ |\ |\ |\
at regular intervals over time (hourly, daily, weekly, monthly,
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
quarterly, annual...) |\
Cross-Sectional Data - CORRECT ANSWERS ✔✔several variables |\ |\ |\ |\ |\ |\ |\
are all measured at the same time point (or time frame)
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
Big Data - CORRECT ANSWERS ✔✔Data warehouses that have
|\ |\ |\ |\ |\ |\ |\ |\ |\
grown enormously in size, with the use of powerful computers,
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
, the information contained in them is accessible and used to help
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
make decisions |\
Discrete variables - CORRECT ANSWERS ✔✔jumps between
|\ |\ |\ |\ |\ |\ |\
possible values |\
continuous variable` - CORRECT ANSWERS ✔✔another possible |\ |\ |\ |\ |\ |\ |\
value between any two values |\ |\ |\ |\
Nominal variables - CORRECT ANSWERS ✔✔categorical variables
|\ |\ |\ |\ |\ |\ |\
for which the categories do not have a natural ordering
|\ |\ |\ |\ |\ |\ |\ |\ |\
Ordinal Variables - CORRECT ANSWERS ✔✔categorical variables
|\ |\ |\ |\ |\ |\ |\
for which the categories have a natural ordering
|\ |\ |\ |\ |\ |\ |\
boxplots - CORRECT ANSWERS ✔✔For quantitative data
|\ |\ |\ |\ |\ |\ |\
works for small to large datasets
|\ |\ |\ |\ |\
plots the five number summary
|\ |\ |\ |\ |\
great for side-by-side comparisons
|\ |\ |\
R code for boxplots - CORRECT ANSWERS ✔✔boxplot()
|\ |\ |\ |\ |\ |\ |\
Histogram - CORRECT ANSWERS ✔✔medium to large quantitative|\ |\ |\ |\ |\ |\ |\
datasets
|\ |\
Bins touch |\ |\
