MAT 120 Probability & Statistics Final – Key Terms, Study Guide &
Exam Review 2026
Qualitative Variable - correct answer ✔✔Descriptive variables; ex. hair color, street address, zip
code
Quantitative Variable - correct answer ✔✔Numerica variables (can be discrete - fixed number or
continuous - infinite)
discrete - # of cars in parking lot
continuous - age, height, weight, time, etc.
Population vs Sample - correct answer ✔✔Population = entire group
Sample = subset of population
Gaps in histogram? - correct answer ✔✔There is a class with no data
Resistancy - correct answer ✔✔A measure of central tendency is resistant if it is not adversely
affected by the presence of extra values; the mean is least resistant
Binomial Mean Interpretation - correct answer ✔✔If the experiment was conducted a large
number of times, we expect, on average, ______________________.
Interpreting a Percentile - correct answer ✔✔EXAMPLE:
Rodney's weight is at or above 94% of all other babies, however, 6% of babies weigh more than
Rodney.
Why does an experiment classify as a binomial experiment? - correct answer ✔✔1. All of the
trials are independent
Exam Review 2026
Qualitative Variable - correct answer ✔✔Descriptive variables; ex. hair color, street address, zip
code
Quantitative Variable - correct answer ✔✔Numerica variables (can be discrete - fixed number or
continuous - infinite)
discrete - # of cars in parking lot
continuous - age, height, weight, time, etc.
Population vs Sample - correct answer ✔✔Population = entire group
Sample = subset of population
Gaps in histogram? - correct answer ✔✔There is a class with no data
Resistancy - correct answer ✔✔A measure of central tendency is resistant if it is not adversely
affected by the presence of extra values; the mean is least resistant
Binomial Mean Interpretation - correct answer ✔✔If the experiment was conducted a large
number of times, we expect, on average, ______________________.
Interpreting a Percentile - correct answer ✔✔EXAMPLE:
Rodney's weight is at or above 94% of all other babies, however, 6% of babies weigh more than
Rodney.
Why does an experiment classify as a binomial experiment? - correct answer ✔✔1. All of the
trials are independent
