Variables and Data Matrices

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This is part of the lecture on http//openonlinecourses.com/statistics

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Observations, Variables and Data Matrices:

Observations, Variables and Data Matrices By Farrokh Alemi, Ph.D.

Data Matrix Is:

Rows are cases Columns are variable Data Matrix Is

Data Matrix Is:

Data Matrix Is

Data Matrix Is:

Data Matrix Is

Variables Are::

Variables Are:

Variables Are::

Variables Are: Expenses Count of hospitalized patients

Variables Are::

Variables Are: International Classification of Disease Severity of Illness

Take Home Message:

This section defined data matrix and types of variables Take Home Message

Do One::

Data were collected about students in a statistics course. Three variables were recorded for each student: number of siblings, student height, and whether the student had previously taken a statistics course. Classify each of the variables as continuous numerical, discrete numerical, or categorical. Do One:

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