STAT 1000 uconn exam 1 Questions and Answers Solved Correctly Rated A+
population - Answers entire collection of objects under study (N)
ex. the uconn student body
hybrid cars sold in 2013
sample - Answers any subset of a population (n)
random sample - Answers sample selected in a way that all samples of the same size have the same
chance of being selected
representative sample - Answers sample whose characteristics of interest are very similar to those of the
pop from which its drawn
parameter - Answers a fixed numerical feature of a pop
ex. uconn student body is 30,000 people
statistic - Answers a numerical quantity computed from sample data, Varies from sample to sample
ex. 100 uconn students = sample, 50% female.
variable - Answers it varies for different members of the population and sample
experimental unit - Answers an individual member of a pop or sample from which data is colleced
qualitative data - Answers value places the experimental unit into a category, like a zip code
discrete numeric data - Answers values are distinct, with a min distance between them...like counting
1,2,3
continuous numeric data - Answers can be any value in one or more intervals, values are never exact
cross section data - Answers data from diff members at the same point in time
time series data - Answers data collected from a single member at different points in time
class frequency - Answers the number of population members in that class (f)
relative frequency - Answers fraction of pop members in the class
percent frequency - Answers percentage of pop members in class
frequency distribution table - Answers shows frequency distribution in a table
mean - Answers sum of all values/number of values
median - Answers middle value of the sample or population
population - Answers entire collection of objects under study (N)
ex. the uconn student body
hybrid cars sold in 2013
sample - Answers any subset of a population (n)
random sample - Answers sample selected in a way that all samples of the same size have the same
chance of being selected
representative sample - Answers sample whose characteristics of interest are very similar to those of the
pop from which its drawn
parameter - Answers a fixed numerical feature of a pop
ex. uconn student body is 30,000 people
statistic - Answers a numerical quantity computed from sample data, Varies from sample to sample
ex. 100 uconn students = sample, 50% female.
variable - Answers it varies for different members of the population and sample
experimental unit - Answers an individual member of a pop or sample from which data is colleced
qualitative data - Answers value places the experimental unit into a category, like a zip code
discrete numeric data - Answers values are distinct, with a min distance between them...like counting
1,2,3
continuous numeric data - Answers can be any value in one or more intervals, values are never exact
cross section data - Answers data from diff members at the same point in time
time series data - Answers data collected from a single member at different points in time
class frequency - Answers the number of population members in that class (f)
relative frequency - Answers fraction of pop members in the class
percent frequency - Answers percentage of pop members in class
frequency distribution table - Answers shows frequency distribution in a table
mean - Answers sum of all values/number of values
median - Answers middle value of the sample or population
