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Stat 151-Module 1 With Complete Solutions Latest Update
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Solution 2024/2025Pepper
Stat 151-Module 1 With Complete Solutions
Latest Update
Statistics - plural ANS✔✔ Field of study concerned with
variation(differences) in data
Case ANS✔✔ A particular element for whom/which we have data about
Think of a case as a person or thing that we have information about, like a
detective collecting evidence on a suspect to solve a crime.
Data ANS✔✔ Collection of items/elements that provide information
ex: Numbers, Characters, images
respondent ANS✔✔ someone who answers, or responds to, a survey
subject ANS✔✔ a human experimental unit aka participant
Experimental unit/Observational unit ANS✔✔ an individual in a study for
which or for whom data is recorded
Records
What are they:
, Solution 2024/2025
Pepper
represented by ____ in a data table: columns or rows? ANS✔✔ Records are
individual cases in a data table, represented by the rows, similar to how
each row in a spreadsheet represents a different person's information.
Sample ANS✔✔ a subset of a population chosen for a study to learn about
the population
Think of a sample as a mini version of a population, like tasting a small
portion of soup to understand how the whole pot tastes.
Population ANS✔✔ The entire group of elements which we want to learn
about
variable ANS✔✔ holds the same information about a certain characteristic
for many cases
the "what"
Categorical (Qualitative) variable ANS✔✔ Categorical (Qualitative) variables
are variables that are labels or categories, such as blood types or provinces,
that help us organize and group things together
They can be nominal(name)
or Ordinal(order)
nominal variable ANS✔✔ A nominal variable is like a name tag that
categorizes things without any specific order, such as blood types or
provinces.
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