MA121 Saylor Academy Introduction To Statistics
Questions With Accurate Solutions
Descriptive statistics Correct Answer - provide facts about a set of data,
which are often depicted in a graph
Inferential statistics Correct Answer - refers to how we draw conclusions
about a population of data, when we examine data in a sample
Quantitative (or numeric) data Correct Answer - describes data that are
numeric or mathematical
Qualitative (or categorical) data Correct Answer - describes data that are
non-numeric
discrete data set Correct Answer - contains a fixed, or small, number of
possible values
continuous data set Correct Answer - has a large or infinite number of
possibilities
Stratified sampling Correct Answer - divides the population into sub-
populations and takes a random sample of each group
cluster sampling Correct Answer - used when population is already
divided into representative groups
Questions With Accurate Solutions
Descriptive statistics Correct Answer - provide facts about a set of data,
which are often depicted in a graph
Inferential statistics Correct Answer - refers to how we draw conclusions
about a population of data, when we examine data in a sample
Quantitative (or numeric) data Correct Answer - describes data that are
numeric or mathematical
Qualitative (or categorical) data Correct Answer - describes data that are
non-numeric
discrete data set Correct Answer - contains a fixed, or small, number of
possible values
continuous data set Correct Answer - has a large or infinite number of
possibilities
Stratified sampling Correct Answer - divides the population into sub-
populations and takes a random sample of each group
cluster sampling Correct Answer - used when population is already
divided into representative groups
