WGU C207 Final

WGU C207 Final Leave the first rating Students also studied Terms in this set (82) Western Governors UniversityC 214 Save WGU C207 Data Driven Decision Ma...84 terms tyler_maxey61 Preview WGU C207 Module Quizzes Multi C...85 terms ctcaw259Preview WGU C207 Data Driven Decision Ma...188 terms rachel_saldana7 P Preview WGU C 218 term ken Practice questions for this set Learn1 / 7Study using Learn Variations accepted as the normal part of the process There are two types of statistics (Analytics)Descriptive and Inferential Descriptive statistics are used to _____?Inform/ Explanatory Inferential statistics are used to _______?Predict/ Trend Name the 4 levels of measurement(NOIR) Normal, Ordinal, Interval, Ratio Choose an answer 1Special Cause variation2Random variation 3Common Cause variation4Assignable Cause variation Don't know?

Continuous data with unique zero pointRatio Orders datât at equal distance apartInterval Place qualitative objects in some kind of orderOrdinal Identify, group, or categorizeNominal Outliers create this type of errorOut-of-Range Unpredictable errorRandom error- No correlation Error may occur from missing data ( Space not filled in) Omission Error- Distorted Results The error repeats itselfSystematic Error- Skewed results What is the process of quality Control?Reduce/ minimize errors All variable measurements and manipulations are under the researcher's control experimental study Used when impractical or impossible to control the conditions of the study Observational study Participants are not told if they arena the treatment group or control group Blind Study The procedure the researcher applies to each subject Treatments Neither the treatment allocator nor the participants know who is in the treatment group or control group Double blind study Questions favor an outcome or the interviewer asks questions that favor an outcome Information Bias The average outcome (payout) when the future includes scenarios that may or may not happen Expected monetary value (EVM) Analysis Observation favor an outcome or the interviewer ask questions that favor and outcome

Outliers Note: Can be included or excluded in the analysis (Cause of Skewness)

Bias tha occurs from not selection a random sample Measurement bias Bias introduced because responders believe it bill be beneficial if selected Conscious bias Each of the four quartile groups a population can be divided Quartiles

Measures the difference between the third and first quartile IQR: inter-quartile range Note: Must be ordered in lowest to highest. value Used the study of the composition of a data set and examined the distribution Box Plot There are six toll booths to enter the highway. What possibility does each toll booth have to get the next customer?1/6th The order you pick your sample in does not matter Combination Picking employees for a shift doesn't matter When given P(A) given P(B), you can used this to find the P(B) given P(A) Bayes Theorem you must know P(A), P(B), P(A) given B Apply this rule when looking for two events occurring (AND) Multiplication Use this rule when looking for one of the other events happening (OR) Addition A simple regression using time as the independent variables Time series A general slope upward or downward over a period of time Trend Unforeseen circumstances causing random deviations Irregularity Repetition in up and down patternsCyclicality Regular Patterns within a single yearSeasonality Represents the probability that a arable falls with certain range Cumulative distribution A list of all the different probabilities of each outcome hat can Occur Probability Distribution Measures of the central tendency are approximately equal (Mean and Median) Normal Distribution Used to compare the mean of three or more groups ANOVA ANOVA used this test statisticsF-Value (must be higher than critical value to reject the Null) T-Test uses this test statisticT-Value (Must be higher than critical value to reject the Null) A correlation is weak if the coefficient is close to ____? Zero

A correlation is strong if the coefficient is close to ____? One or - one Illustrates performance measurements over a period of time Run Chart Ilitres limits or constraints a process should no exceed Control Chart Assists in braining storming issues that are causing a problem Cause and Effect Diagram (Not Measurements) Visual tool to understand a processFlowchart Easy tool to collect data to create other charts Check Sheet Graphical display of a data set with one bar for each category Histogram and Parto Graphical display of data set centeredHistogram Graphical display of data set in highest to lowest order Pareto Used for potential relationships and correlation between variables Scatter diagram Can the seven tools be used independently?Yes What percent of quality problems does Ishikawa claim the seven tools can solve?

90-95%

Diagram demonstration all of the elements that can influence a process before it starts SIPOC (Supplier- Input- Process- Output- Customer) Manufacturing approach to improving processes Six Sigma In manufacturing, statistics is used for?Quality Control Plan- Do- Study- Act- Which step is response to Analytical results?Act Shows whether a result meets a requirement or not Attribute Shows how ell a result meets the requirementVariable Variations accepted as the normal part of the process Common Cause variation Variation from an abnormality causing large discrepancy in results Special cause variation

Model of designing, analyzing, and scoring tests IRT: Item Response theory