HSCI 345 Exam 1 (latest update 2025-
2026) questions and 100% correct answers
[Grade A]
Non-Parametric Statistics - correct answer 1. Do not require assumptions about the
distribution of the variable(s) being tested
2. Can be preformed on data that is at the Nominal or Ordinal Level of Measurement
3. May also be appropriate when Interval or Ratio data do not meet the required
assumptions for parametric statistics
Frequencies - correct answer the rate of occurrence (count) for particular measure or
characteristic
Histogram - correct answer A bar graph with the x-axis representing the measure or
characteristic and the y-axis representing the frequency of occurrence
Percentages - correct answer The ratio of occurrence (relative frequency) for a
particular measure or characteristic
Pie Charts - correct answer Often use to graphically represent Percentages
Percentiles - correct answer Provide a relative indication of where an individual falls
within a distribution
Normal Distributions - correct answer 1. Bell shaped
2. Asymptotic
3. Symmetrical
, HSCI 345 Exam 1 (latest update 2025-
2026) questions and 100% correct answers
[Grade A]
4. Continuous
Skewness - correct answer A measure of the asymmetry of the probability
distribution of a real-valued random variable about its mean. The skewness value can
be positive, zero, negative, or undefined based on the direction of the longer tail
Kurtosis - correct answer A measure of whether the data are heavy-tailed or light-
tailed relative to a normal distribution
Leptokurtic - correct answer normal curves that are tall and thin, with only a few
scores in the middle of the distribution having a high frequency
Platykurtic - correct answer normal curves that are short and more dispersed
(broader)
Probability - correct answer Branch of mathematics concerning numerical
descriptions of how likely an event is to occur
Event - correct answer a collection of outcomes or results of a procedure
Simple Event - correct answer an outcome or result of a procedure that can not be
broken down into simpler components
, HSCI 345 Exam 1 (latest update 2025-
2026) questions and 100% correct answers
[Grade A]
Sample Space - correct answer all the possible simple events for a procedure
Probability Rule 1 - correct answer Observe a procedure a large number of times and
count how frequently event A occurs
Probability Rule 2 - correct answer Assumes that a procedure has n different simple
events and each has an equal probability of occurring
Probability Rule 3 - correct answer Probability of event A determined from an
estimate of the value (based on relevant circumstances)
Law of Large Numbers - correct answer As the sample size increases, the relative
frequencies of outcomes get closer to the theoretical (or actual population)
probability value
Compliment of Event A - correct answer Probability that event A will not occur
P(not A) = 1 - P(A)
Science - correct answer Impartial weighing of empirical evidence
Research - correct answer Scientifically structured problem solving
Variable - correct answer Characteristics that change or can take on different values
from person to person
2026) questions and 100% correct answers
[Grade A]
Non-Parametric Statistics - correct answer 1. Do not require assumptions about the
distribution of the variable(s) being tested
2. Can be preformed on data that is at the Nominal or Ordinal Level of Measurement
3. May also be appropriate when Interval or Ratio data do not meet the required
assumptions for parametric statistics
Frequencies - correct answer the rate of occurrence (count) for particular measure or
characteristic
Histogram - correct answer A bar graph with the x-axis representing the measure or
characteristic and the y-axis representing the frequency of occurrence
Percentages - correct answer The ratio of occurrence (relative frequency) for a
particular measure or characteristic
Pie Charts - correct answer Often use to graphically represent Percentages
Percentiles - correct answer Provide a relative indication of where an individual falls
within a distribution
Normal Distributions - correct answer 1. Bell shaped
2. Asymptotic
3. Symmetrical
, HSCI 345 Exam 1 (latest update 2025-
2026) questions and 100% correct answers
[Grade A]
4. Continuous
Skewness - correct answer A measure of the asymmetry of the probability
distribution of a real-valued random variable about its mean. The skewness value can
be positive, zero, negative, or undefined based on the direction of the longer tail
Kurtosis - correct answer A measure of whether the data are heavy-tailed or light-
tailed relative to a normal distribution
Leptokurtic - correct answer normal curves that are tall and thin, with only a few
scores in the middle of the distribution having a high frequency
Platykurtic - correct answer normal curves that are short and more dispersed
(broader)
Probability - correct answer Branch of mathematics concerning numerical
descriptions of how likely an event is to occur
Event - correct answer a collection of outcomes or results of a procedure
Simple Event - correct answer an outcome or result of a procedure that can not be
broken down into simpler components
, HSCI 345 Exam 1 (latest update 2025-
2026) questions and 100% correct answers
[Grade A]
Sample Space - correct answer all the possible simple events for a procedure
Probability Rule 1 - correct answer Observe a procedure a large number of times and
count how frequently event A occurs
Probability Rule 2 - correct answer Assumes that a procedure has n different simple
events and each has an equal probability of occurring
Probability Rule 3 - correct answer Probability of event A determined from an
estimate of the value (based on relevant circumstances)
Law of Large Numbers - correct answer As the sample size increases, the relative
frequencies of outcomes get closer to the theoretical (or actual population)
probability value
Compliment of Event A - correct answer Probability that event A will not occur
P(not A) = 1 - P(A)
Science - correct answer Impartial weighing of empirical evidence
Research - correct answer Scientifically structured problem solving
Variable - correct answer Characteristics that change or can take on different values
from person to person
