STATISTICS FOR ENGINEERS EXAM
2025/2026 QUESTIONS AND ANSWERS
100% PASS
Sample - ANS a set of data collected and/or selected from a statistical population by a
defined procedure
Statistic - ANS The branch of mathematics dealing with numerical data.
Population - ANS The entire pool from which a statistical sample is drawn.
Parameter - ANS any numerical quantity that characterizes a given population or some aspect
of it
Categorical - ANS a variable that can take on one of a limited, and usually fixed, number of
possible values, thus assigning each individual to a particular group or "category."
Quantitative - ANS data expressing a certain quantity, amount or range
Discrete - ANS variables whose possible values are a subset of the integers, such as Social
Security numbers, the number of people in a family, ages rounded to the nearest year, etc
Continuous - ANS a variable that can take on any value between its minimum value and its
maximum value
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Descriptive - ANS data set which can either be a representation of the entire population or a
sample
Inferential - ANS used to make generalizations from a sample to a population.
Measures of Central Tendency - ANS Mean, Median, and Mode
Measures of Variability - ANS extent to which these data points differ from each other
Skew - ANS measure of the asymmetry of the probability distribution
Empirical Rule - ANS also known as the three-sigma rule or the 68-95-99.7 rule, provides a
quick estimate of the spread of data in a normal distribution given the mean and standard
deviation. Specifically, the empirical rule states that for a normal distribution
Central Limit Theorem - ANS A statistical theory that states that given a sufficiently large
sample size from a population with a finite level of variance, the mean of all samples from the
same population will be approximately equal to the mean of the population
Probability - ANS distribution is a table or an equation that links each outcome of a statistical
experiment with its probability of occurrence. Consider a simple experiment in which we flip a
coin two times. An outcome of the experiment might be the number of heads that we see in
two coin flips.
Event - ANS some subset of outcomes from the sample space
Complement - ANS The complement of an event is the event not occuring
Disjoint - ANS Two events are disjoint(mutually exclusive) if they cannot occur at the same
time
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
2025/2026 QUESTIONS AND ANSWERS
100% PASS
Sample - ANS a set of data collected and/or selected from a statistical population by a
defined procedure
Statistic - ANS The branch of mathematics dealing with numerical data.
Population - ANS The entire pool from which a statistical sample is drawn.
Parameter - ANS any numerical quantity that characterizes a given population or some aspect
of it
Categorical - ANS a variable that can take on one of a limited, and usually fixed, number of
possible values, thus assigning each individual to a particular group or "category."
Quantitative - ANS data expressing a certain quantity, amount or range
Discrete - ANS variables whose possible values are a subset of the integers, such as Social
Security numbers, the number of people in a family, ages rounded to the nearest year, etc
Continuous - ANS a variable that can take on any value between its minimum value and its
maximum value
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Descriptive - ANS data set which can either be a representation of the entire population or a
sample
Inferential - ANS used to make generalizations from a sample to a population.
Measures of Central Tendency - ANS Mean, Median, and Mode
Measures of Variability - ANS extent to which these data points differ from each other
Skew - ANS measure of the asymmetry of the probability distribution
Empirical Rule - ANS also known as the three-sigma rule or the 68-95-99.7 rule, provides a
quick estimate of the spread of data in a normal distribution given the mean and standard
deviation. Specifically, the empirical rule states that for a normal distribution
Central Limit Theorem - ANS A statistical theory that states that given a sufficiently large
sample size from a population with a finite level of variance, the mean of all samples from the
same population will be approximately equal to the mean of the population
Probability - ANS distribution is a table or an equation that links each outcome of a statistical
experiment with its probability of occurrence. Consider a simple experiment in which we flip a
coin two times. An outcome of the experiment might be the number of heads that we see in
two coin flips.
Event - ANS some subset of outcomes from the sample space
Complement - ANS The complement of an event is the event not occuring
Disjoint - ANS Two events are disjoint(mutually exclusive) if they cannot occur at the same
time
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
