standard deviation
standard deviation
相关考题：
Using the problem stated in the Special window, Calculate the deviation of duration for the task, using the PERT concept of standard deviation of task duration.A . 0.5B . 1C . 1.8D . 2.2E . 2.8
The specification for a particular part is 10" + or - 0.015". The standard associated process produces parts with a means of 10" and standard deviation of 0.002'. The process capability index is:A . 0.002B . 1C . 2.5D . 7.5E . None of the above
A process characteristic has a true mean of 150 and a true standard deviation of 20. A sample of 25 items is taken from this process. The standard error of the estimate is:A . 0.2B . 0.8C . 4D . 5E . 7.5
Two sources of variation in the length of hex bolts exist. Production variation and measurement error. The QC manager knows that the standard deviation from these sources is 0.24" and 0.43" , respectively. What is the total standard deviation.A . .10 inch.B . .19 inch.C . .34 inch.D . .49 inch.E . .67 inch.
For a given characteristic in a construction process, the standard deviation associated with production variation is 0.8", and the standard deviation associated with measurement variation is 0.6". The total standard deviation for this characteristic is:A . 1.4"B . 1.2".C . 1.0"D . 0.8"E . 0.2"
Standard deviation of project completion is _____ .A a relationship of the uncertainty of critical path activities.B an indicator of project end date target confidenceC a function of critical path, leveling and project costs.D A and BE All of the above.
Amount at Stake is the _____ .A function of planned time/real time project costs.B risk identified in successful project completions.C (Standard Project Deviation + Expected Costs)/6D cost of investment loss + least cost to restore status quo.E inherent risk at conception altered by standard project deviations.
143 For a given characteristic in a construction process, the standard deviation associated with production variation is 0.8", and the standard deviation associated with measurement variation is 0.6". The total standard deviation for this characteristic is:A. 1.4"B. 1.2".C. 1.0"D. 0.8"E. 0.2"
147 A process characteristic has a true mean of 150 and a true standard deviation of 20. A sample of 25 items is taken from this process. The standard error of the estimate is:A. 0.2B. 0.8C. 4D. 5E. 7.5
130 Standard deviation of project completion is _____ .A. a relationship of the uncertainty of critical path activities.B. an indicator of project end date target confidenceC. a function of critical path, leveling and project costs.D. A and BE. All of the above
123 Using the problem stated in the Special window, Calculate the deviation of duration for the task, using the PERT concept of standard deviation of task duration.A. 0.5B. 1.0C. 1.8D. 2.2E. 2.8
When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results ______.A.in the vessel's Official LogbookB.on the compass deviation cardC.in the compass deviation logD.on a Napier diagram
Your vessel is proceeding down a channel，and you see a pair of range lights that are in line dead ahead．The chart indicates that the direction of this pair of lights is 229°T，and variation is 6°W．If the heading of your vessel at the time of the sighting is 232°per standard magnetic compass，what is the correct deviation ________．A.3°EB.9°EC.3°WD.9°W
材料：Intention can be inferred in many ways by the courts．Thus the discharge at Cadiz instead of Bombay“for nefarious reasons”was an unreasonable deviation．A transshipment was declared to be an unreasonable deviation “since no excuse has been proffered for the deviation．” A geographic deviation abrogated the contract because“there can be no suggestion that the deviation was other than voluntary．”On the other hand，where the court was unable to find that a defendants action constituted“a voluntary deviation without reasonable cause，” the defendant was exculpated of liability．The vast majority of decisions require that intention be proved in cases of deviation and quasi-deviation．The carrier has the burden of proving that it had no intention to deviate or that the deviation was not for the carriers sole benefit．Accordingly，a geographic deviation due to an erroneous change of course by the master is not a deviation，but an error in navigation；in such a case，the carrier is protected under the Rules．If，however，the master is ordered to alter the customary or planned route，or deliberately takes it upon himself to do so，for a reason other than to save persons or cargo（or some similar reason），then the course alteration is an unreasonable deviation，because it is intentional and for the carriers own benefit．nefarious，邪恶的，穷凶极恶的proffer，提出abrogate，使作废问题：If the carrier has proved that he had no intention to deviate or that the deviation was not for his sole benefit ________．A.he will be exculpated of liabilityB.he is to investigate the case furtherC.he will not be exculpated of liabilityD.he has to contact with the shipper to see if he himself is free of any liabilityA geographic deviation due to an erroneous change of course by the master ________．A.is not a reasonable deviationB.is not an error in navigationC.is a reasonable deviationD.can not be determined if it constitutes a reasonable deviationWhere the court is unable to find that a defendant's action constituted “a voluntary deviation without reasonable cause，”________．A.the defendant will not be responsible for the loss and damageB.the defendant will be responsible for the loss and damageC.if the defendant be responsible for the loss and damage can not be determinedD.the court should not make any decisionAn unreasonable deviation must be committed by the master ________．A.intentionallyB.for the carrier's own benefitC.intentionally and for the carrier's own benefitD.reasonably请帮忙给出每个问题的正确答案和分析，谢谢！
If the compass heading and magnetic-heading are the same then ______.A.the deviation has been offset by the variationB.there is something wrong with the compassC.the compass is being influenced by nearby metalsD.there is no deviation on that heading
问答题Kara attends a university where students study for an average (arithmetic mean) of 13.4 hours per week. How many hours per week does Kara study? (1) The standard deviation of study time at Kara’s school is 2.8. (2) Kara’s study time is one standard deviation away from the mean.
单选题If the set S is composed of the following numbers {99, 100, 100, 105, 106, 116, 123}, which of the following is largest?AThe average (arithmetic mean) of set SBThe median of set SCThe mode of set SDThe range of set SEThe standard deviation of set S
单选题The compass deviation changes as the vessel changes（）.Ageographical positionBspeedCheadingDlongitude
单选题If the magnetic heading is greater than the compass heading，the deviation is（）.AeastBwestCnorthDsouth
单选题If the compass heading and the magnetic heading are the same then（）.Athe deviation has been offset by the variationBthere is something wrong with the compassCthe compass is being influenced by nearby metalsDthere is no deviation on that heading
单选题The quadrantal spheres are used to（）.ARemove deviation on the intercardinal headingsBRemove deviation on the cardinal compass headingsCRemove heeling errorDCompensate for induced magnetism in vertical soft iron