STATISTICS PORTAGE EXAM 1 QUESTIONS WITH COMPLETE SOLUTIONS

STATISTICS PORTAGE EXAM 1
QUESTIONS WITH COMPLETE
SOLUTIONS
statistics - ANSWERencompasses 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... - ANSWERdata (singular datum)

3 importances of statistics - ANSWER1. 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 - ANSWERa measurable characteristic that can vary in value

Examples of variables - ANSWERreligion, temperature, cancer diagnosis, number of
patients in a hospital, job satisfaction

Variables can be... - ANSWERqualitative or quantitative

qualitative (categorical) variable - ANSWERa variable measured in non-numerical
terms, using labels or categories; all are discrete

Examples of qualitative variables - ANSWERreligion, cancer diagnosis

quantitative (numerical) variables - ANSWERa variable that is measured in numerical
terms; can be discrete or continuous

Examples of quantitative variables - ANSWERtemperature, number of patients in a
hospital

discrete variable - ANSWERcan be organized into separate categories or counted using
whole numbers

Examples of discrete variables - ANSWERreligions, number of patients in a hospital

continuous variable - ANSWERhas an infinite number of values between observations

Examples of continuous variables - ANSWERtemperature, time