Testbank Probability with Applications in Engineering, Science, and Technology (2nd Edition) Solutions Manual

Solutions Manual – Probability with
Applications in Engineering, Science, and
Technology (2nd Edition)

Categorical Variable - answer-Variable that names categories and tells us which category a
subject belongs to



Numerical Variable - answer-Has units, variable with numerical values



Identifier Variable - answer-uniquely identifies an individual (social security number)



Univariate - answer-Data consisting of observations made on a single variable



Bivariate - answer-Data consisting of observations made on two variables



Multivariate - answer-Data consisting of observations made of more than one variable



Frequency Distribution - answer-a listing of all categories with their frequencies (counts = # of
values)



Relative Frequency - answer-a frequency count for each category divided by total number of
counts (always = 1)



3 Requirements for Describing Numerical Data - answer-Shape, Location, Spread


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, Types of Modality - answer-Uni, Bi, and Multimodal



If says between, Include or Exclude Values? - answer-Include values



Lower Quartile - answer-Q1 = lower fourth



Upper Quartile - answer-Q3 = upper fourth



Median and equation - answer-middle number

((n+1)P)/100



Mean - answer-Average



Mode - answer-most often occurring



Range - answer-(highest value) - (lowest value)



IQR (Interquartile Range) and equation - answer-Difference between Q3 and Q1,

IQR = Q3-Q1



Sample Variance - answer-s^2 = (all values -Mean)^2/(n-1)



Standard deviation - answer-S = sqrt(variance)



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