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August 31, 2015

Homework Help: Math

Posted by Latisha on Saturday, February 26, 2011 at 9:02pm.

Can someone please help me with these three question? I having a very difficlut time answering them

May first question
To select a _________ sample, the population is divided into disjoint subgroups according to some characteristics like income level, and then a few individuals are selected randomly from each of the subgroups to be in the sample. (Points : 1)

(May choices are)
stratified
random
cluster
systematic

May second question
If a student's percentile rank in a class of 400 students is 87, find the student's class rank. (Points : 1)

(My choices are)
40
44
48
52

My final question
Armia's percentile rank on an exam in a class of 300 is 85. Sanjo's class rank is 42. Who is ranked higher?

(My choices are)
Armia
Sanjo

Thanks you

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