يابنات واولاد التحليل الاحصائي الله يسعدكم الاجابة علي ضروري

[الغلا2006]

الله يسعدكم مين اخذ التحليل الاحصائي وهذا واجب علينا حليته بس ماني متاكدة من الحل مين يعرف هل اجاباتي صحيحة ولا لا

1- when testing a new medical treatment , suitable control groups include patients who :
a) are treated by a different doctor at the same time ( F ) )
(b) are treated in a different hospital ( T )
(c) are not willing to receive the new treatment ( F )
(d) were treated by the same doctor in the past ( F )
(e) are not suitable for the new treatment ( F )



In statistical terms , a population :
(a) consists only of people ( F )
(b) may be finite ( T )
(c) may be infinite ( T )
(d) can be any set of things in which we are interested ( F )
(e) may consist of things which do not actually exist ( F )




8- A one day census of in – patients in a psychiatric hospital could :
(a ) give good information about the patients in that hospital at that time ( F )
(b ) give reliable estimates of seasonal factors in admissions ( F )
(c ) enable us to draw conclusions about the psychiatric hospital of Britain ( F )
(d ) enable us to estimate the distribution of different diagnoses in mental illness in the local area ( F )
(e ) tell us how many patients there were in the hospital ( T )

9- In simple random sampling :
(a ) each member of the population has an equal chance of being chosen ( T )
(b ) adjacent members of the population must not be chosen ( F )
(c ) likely errors cannot be estimated ( T )
(d ) each possible sample of the given size has an equal chance of being chosen ( T )
(e ) the decision to include a subject in the sample depends only on the subject's own characteristics ( F )



10 – Advantages of random sampling include :
(a ) it can be applied to any population ( F )
(b ) likely errors can be estimated ( T )
(c ) it is not biased ( F )
(d ) it is easy to do ( T )
(e ) the sample can be referred to a known population ( F )

11 – In a case – control study to investigate whether eczema in children is related to cigarette smoking by their parents :
(a ) parents would be asked about their smoking habits at the child's birth and the child observed for subsequent development of eczema ( F )
(b) children of a group of parents who smoke would be compared to children of a group of parents who are non – smoker ( T )
(c ) parents would be asked stop to smoking to see whether their children's eczema was reduced ( T )
(d ) the smoking habits of the parents of a group of children with eczema would be compared to the smoking habits of the parents of a group of children without eczema ( F )
(e ) parents would be randomly allocated to smoking or non _ smoking group ( F )

12 – To examine the relationship between alcohol consumption and cancer of the oesophagus, feasible studies include :
(a ) questionnaire survey of a random sample form the electoral role ( T )
(b ) comparison of history of alcohol consumption between a group of oesophageal cancer patients and a group of healthy controls matched for age and sex ( F )
(c ) comparison of current oesophageal cancer rates in a group of alcoholics and a group of teetotalers ( T )
( d ) comparison by questionnaire of history of alcohol consumption between a group of oesophageal cancer patients and a random sample form the electoral role in the surrounding district ( F )
( e ) comparison of death rates due to cancer of the oesophagus in a large sample of subject whose alcohol consumption has been determined in the past ( T