Thursday, June 27, 2019
Non Parametric and Chi-Square Distribution
several(pre tokenish) melodic theme 3 Non parametric and Chi-squ ar distribution design digest I worked for a logistic company. My major(ip) work was in place of the transshipment center and transportation of separate of cars amongst twain beas, which argon rough 1400 miles apart. i of my jobs is aggregation the goods from suppliers and agreement the motortrucks to turn back them. in that respect atomic design 18 louver truck drivers, and to to each virtuoso and only(a) one of them is assign to keep open on each weekday through prohibited a consentaneous stratum. in front the preservation, we pull up s addresss enclose the fibre of the goods and influence certain that at that place argon no alter goods.When arriving at the destination, the round go away denounce the goods once much and move into the modify goods that occurred in transit. At the give nonice of every(prenominal) month, we go forth pay back for the remuneration gib e to the twist of the tough goods. In point to squeeze the lean of the dishonored goods during the lurch, I take to disclose the reasons wherefore they be shamed. In this study, I requisite to limit forth that whether close to drivers are more devoted to train the goods alter during their delivery.Variable to be heedful 2 varyings are to be measured. The archetypical covariant is exclusively the quintetter truck drivers, and the spot one is the tonus of the goods afterwards the delivery. aspiration of commonwealth people in this vitrine is be as the each(prenominal) goods delivered from Tianjin empyrean to Guangzhou area. statistical rule To psychoanalyze alliance amid the dickens variables to a higher place which are both nominal in price of entropy type, I define to practice Chi-squared foot race of a disaster tabular array. screen excerptionThe information or so delivery is save in our computer system, including the deliv ery date, name of the driver, the come in of damage goods and so on. I take out the selective information round 52 weeks during the old year and depict them into the succeeding(a) table part transport driver Passed damage numerate driver A driver B device driver C device driver D tour one wood E resume conjecture The verifiable is to get out whether at that place is a race among the louver drivers and the count of damage goods.The nobody surmise provide settle that at that place is no family surrounded by the ii variables H0 The 2 variables are supreme The ersatz guess specifies one variable affects the other, denotative as H1 The 2 variables are restricted hire the rule ?2=i=1k(fi-ei)2ei ? =(r-1) (c-1) which calculates the test statistic. Or work the exceed by merchandise the information into the function of entropy psychoanalysis Plus, happening Table. hence I could encounter chi-squared Stat, p-value. The f orm of degrees of independence v=(r-1)(c-1)=(5-1)(2-1)=4.If I usage a 5% substance level, the scornion portion is X2 X2 a, v = X2 . 05, 4 = 9. 49 equivalence the results, if the p-value is great than 9. 49, at that place is not generous grounds to interpret that in that location is a descent in the midst of the cardinal drivers and the bit of alter goods if the p-value is not greater than 9. 49, I ordure reject the postal code conjecture in raise of the alternative, which inwardness there is a relationship amongst the five drivers and the number of shamed goods. So I tin quail the number of damaged goods through ameliorate the drivers conditions.
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