Stat 164 Chapter 1: Basic
Statistical Concepts Questions
and Answers Updated 2026
SAMPLE SPACE (S) - Answer The set of all possible outcomes of a random experiment
EVENT - Answer The subset of a sample space whose probability is defined.
EVENT OCCURRED if... - Answer Experiment outcome = sample point in event subset
PROBABILITY - Answer A number from 0 to 1 that measures the likelihood that an event will
occur.
Approaches in Assigning Probability [3] - Answer 1. A priori
2. A posteriori
3. Subjective
A PRIORI PROBABILITY - Answer "Priori" - before
Deductive probability
A POSTERIORI PROBABILITY - Answer "Posterior" - after
Inductive probability
RANDOM VARIABLE - Answer A numerical description of the outcome of an experiment.
(outcome => number)
PROBABILITY DISTRIBUTION FUNCTION - Answer A list of all possible values of a random
value with their corresponding probabilities.
, BERNOULLI RANDOM EXPERIMENT - Answer A random experiment with only 2 possible
outcomes.
BINOMIAL RANDOM EXPERIMENT
[4] - Answer A random experiment...
1. that is n identical Bernoulli trials
2. whose trials are independent
3. whose probability of success is fixed from trial to trial
RANDOM EXPERIMENT [3] - Answer A process...
1. with well-defined outcomes
2. that is unpredictable
3. that is repeatable
PARAMETER - Answer A trait of an entire population
STATISTICS (Plural) - Answer Summarized data that indicates the traits of a sample
STATISTICS (plural) - Answer The science of collecting and analyzing numerical data.
Classifications of a Variable [2] - Answer 1. Quantitative
2. Qualitative
QUALITATIVE VARIABLE - Answer Non-numerical characteristics; immeasurable by tools.
QUANTITATIVE VARIABLE - Answer Amount-based characteristics; measured by tools and
represented by numbers.
Levels of Measurement [4] - Answer Quantitative
Statistical Concepts Questions
and Answers Updated 2026
SAMPLE SPACE (S) - Answer The set of all possible outcomes of a random experiment
EVENT - Answer The subset of a sample space whose probability is defined.
EVENT OCCURRED if... - Answer Experiment outcome = sample point in event subset
PROBABILITY - Answer A number from 0 to 1 that measures the likelihood that an event will
occur.
Approaches in Assigning Probability [3] - Answer 1. A priori
2. A posteriori
3. Subjective
A PRIORI PROBABILITY - Answer "Priori" - before
Deductive probability
A POSTERIORI PROBABILITY - Answer "Posterior" - after
Inductive probability
RANDOM VARIABLE - Answer A numerical description of the outcome of an experiment.
(outcome => number)
PROBABILITY DISTRIBUTION FUNCTION - Answer A list of all possible values of a random
value with their corresponding probabilities.
, BERNOULLI RANDOM EXPERIMENT - Answer A random experiment with only 2 possible
outcomes.
BINOMIAL RANDOM EXPERIMENT
[4] - Answer A random experiment...
1. that is n identical Bernoulli trials
2. whose trials are independent
3. whose probability of success is fixed from trial to trial
RANDOM EXPERIMENT [3] - Answer A process...
1. with well-defined outcomes
2. that is unpredictable
3. that is repeatable
PARAMETER - Answer A trait of an entire population
STATISTICS (Plural) - Answer Summarized data that indicates the traits of a sample
STATISTICS (plural) - Answer The science of collecting and analyzing numerical data.
Classifications of a Variable [2] - Answer 1. Quantitative
2. Qualitative
QUALITATIVE VARIABLE - Answer Non-numerical characteristics; immeasurable by tools.
QUANTITATIVE VARIABLE - Answer Amount-based characteristics; measured by tools and
represented by numbers.
Levels of Measurement [4] - Answer Quantitative
