EDD 112 Final SUNY Binghamton University Actual Questions and Answers 2023-2024 with complete solution What are statistics? Ans - The collection, organization, analysis, and interpretation of data What are the 2 types of statistics? Ans - descriptive and inferential What does the frequency distribution provide? Ans - A compact summary of data by showing how many units fall into each attribute of a variable What is a histogram a pictorial summary of? Ans - Descriptive statistics Measures of central tendency is descriptive statistics? Ans - Mean Median Mode Quartiles Percentiles Trimmed means What are the units of variance? Ans - Units squared Sample variance Ans - Measure of variability based on derivation from the mean Sample standard deviation Ans - Square root of the variance, denoted by s What must you have to calculate population variance? Ans - Every value of the population Inferential statistics Ans - Focuses on drawing conclusions about a population based on sample info Population Ans - Consists of all individuals or objects of a particular type Sample Ans - Subset of the population Why do we use Statistics? Ans - To acquire info Draw conclusions about an entire population 1 / 2
What does Simio use stats to do? Ans - Evaluate processes When choosing between standard deviation and variation, what do people tend to choose and why? Ans - SD bc the units are more intuitive Random variable Ans - Any rule that assigns a numerical value to each outcome of an experiment Random variable types Ans - Discrete and continuous
- types of probability distributions Ans - Probability density functions
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Discrete probability density function Probability density functions Ans - A function p(x) or f(x) that relates the values of the occurance graphically or as an equation Are probability density function continuous or discrete? Ans - Can be both What condition does discrete probability function satisfy? Ans - The probability that x can take a specific value is p(x) p(x) is + or 0 for all real x The sum of p(x) over all positive values is 1 "There's no sense being exact about something if you don't even know what you're talking about" Ans - John von Neumann What do requirements describe? Ans - Necessary functions and features of a system we are able to conceive, design, implement, and operate How are requirements often organized? Ans - Hierarchially At a high level, what do requirements focus on? Ans - What should be achieved, not how to achieve Are requirements specified at every level? Ans - Yes What do requirements specify the design in terms of? Ans - What the design must accomplish What constraints are satisfied What forms the backbone of systems engineers? Ans - Requirements What do system engineers do? Ans - Delegate requirements to successively lower level subsystems and components, then verifies that requirement are met at each level What do requirements provide the basis of? Ans - Design