CNSL 503: A GUIDE TO A+. QUESTIONS AND ANSWERS
FORMAT.LATEST UPDATE
statistics
encompasses the mathematical field that allows us to organize, summarize, describe and interpret
different forms of information
Statistics involves using mathematical formulas and calculations to understand both small and large
sets of informations called...
data (singular datum)
3 importances of statistics
1. allows to be described and communicated sufficiently and concisely
2. allows to draw inferences about data
3. equips with necessary tools to make everyday decisions
variable
a measurable characteristic that can vary in value
Examples of variables
religion, temperature, cancer diagnosis, number of patients in a hospital, job satisfaction
Variables can be...
qualitative or quantitative
qualitative (categorical) variable
a variable measured in non-numerical terms, using labels or categories; all are discrete
Examples of qualitative variables
religion, cancer diagnosis
quantitative (numerical) variables
a variable that is measured in numerical terms; can be discrete or continuous
Examples of quantitative variables
temperature, number of patients in a hospital
discrete variable
can be organized into separate categories or counted using whole numbers
Examples of discrete variables
FORMAT.LATEST UPDATE
statistics
encompasses the mathematical field that allows us to organize, summarize, describe and interpret
different forms of information
Statistics involves using mathematical formulas and calculations to understand both small and large
sets of informations called...
data (singular datum)
3 importances of statistics
1. allows to be described and communicated sufficiently and concisely
2. allows to draw inferences about data
3. equips with necessary tools to make everyday decisions
variable
a measurable characteristic that can vary in value
Examples of variables
religion, temperature, cancer diagnosis, number of patients in a hospital, job satisfaction
Variables can be...
qualitative or quantitative
qualitative (categorical) variable
a variable measured in non-numerical terms, using labels or categories; all are discrete
Examples of qualitative variables
religion, cancer diagnosis
quantitative (numerical) variables
a variable that is measured in numerical terms; can be discrete or continuous
Examples of quantitative variables
temperature, number of patients in a hospital
discrete variable
can be organized into separate categories or counted using whole numbers
Examples of discrete variables
