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ASQ CQPA Book 3 Exam Study Guide Solutions Basic Distributions - ANSWER-Depicts the amount of variation in outcomes of a process, used to represent the behavior of a process outcome. Usually described in terms of its shape, mean, and standard deviation Central Tendency - Descriptive Statistics...

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  • November 10, 2024
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ASQ CQPA Book 3 Exam Study Guide

Solutions


Basic Distributions - ANSWER✔✔-Depicts the amount of variation in outcomes of a process, used to

represent the behavior of a process outcome. Usually described in terms of its shape, mean, and

standard deviation


Central Tendency - Descriptive Statistics - ANSWER✔✔-measures data location using the mean, mode

and median


Dispersion - ANSWER✔✔-a measure of spread around a central point, includes the measures range,

standard deviation and variance


Mean (distribution) - ANSWER✔✔-typically used with normal data, provides a reference point for

relating all other data points


ex. 1,1,2,3,4,5,5 = mean = 3


Median (distribution) - ANSWER✔✔-Center point. Equal number of data points to each side


ex: 2,3,4,4,5,5,5,5,6,6,7,7,8


Mode (distribution) - ANSWER✔✔-Not used to generate statistical data, typically used with non-normal

data, may have multiple modes


ex: 1,1,2,3,4,5,5: mode = 1 and 5




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Binomial distribution - ANSWER✔✔-Modeling discrete (attribute) data having only two possible

outcomes... (ex: yes or no )


Poisson distribution - ANSWER✔✔-estimating probability (Note: the binomial and poisson distributions

are known as discrete distributions)


Normal distribution - ANSWER✔✔-produces a bell-shaped curve


Weibull distribution - ANSWER✔✔-statistical approach evaluating a design to deduce the percentages of

failures


Skewed distribution - ANSWER✔✔-Not normal


Skewness - ANSWER✔✔-= mean - mode / standard deviation


Bimodal Distribution - ANSWER✔✔-a probability distribution having two distinct statistical modes (Note:

Skewed and bimodal distributions are not normal distributions. They are skewed to either side or toward

both ends


Variability - ANSWER✔✔-Spread of data


Standard Deviation - ANSWER✔✔-Used for measuring dispersion, measures the spread of the values in

the data set


Range - ANSWER✔✔-a measure of dispersion


Variance - ANSWER✔✔-measures the extent of dispersion around the central tendency.


Probability - ANSWER✔✔-The chance of an event occurring




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