A group of 20 values has a mean of 85 and a median of 80. A different group of 3

游客2024-01-12 36

问题 A group of 20 values has a mean of 85 and a median of 80. A different group of 30 values has a mean of 75 and a median of 72.
(a)What is the mean of the 50 values?
(b)What is the median of the 50 values? [br]

选项

答案 mean = 79

解析

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A group of 20 values has a mean of 85 and a median of 80. A different group of 3

Howmanydifferentpositiveintegersarefactorsof342?A、9B、11C、12D、20E、22

ThreedifferentlumberjackscanchopWamountofwoodin30minutes,45minutes,

Sixdifferentnumbersaretobeselectedfromthe(0,1,2,3,4,5,6)tocompos

Themedianoffivedifferentpositiveintegersis12,whichofthefollowingis

Whatisthetotalnumberofdifferent5-digitintegersthatcontainallofthed

Themedianoffivepeople’s(A,B,C,DandE)salaryis20,000andtherangeof

Whichofthefollowingdescribesthesetofallpossiblevaluesofthepositive

What’sthemedianof3，6，5，1，6，7，8?A、1B、3C、6D、7E、8C不能轻易的认为中数就是1；我们首先要将这组数做有

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有一数列Xk=4×k-3，k分别为7，8，9，4，5，6，10，11，12，问这些数的median等于多少?A、29B、17C、13D、21E、15A

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TheEndoftheBook?A)Amazon,byfarthelargestbookse

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TheoldestuniversityinIrelandis______.A、theNationalUniversityB、DublinCit

A-----Guardagainstdamp.J-----Openhere.B-----Handlewithcare.

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