Statistics- Sampling Techniques Review Questions with Correct Answers Already Passed
7 views 0 purchase
Course
Statistics- Sampling Techniques
Institution
Statistics- Sampling Techniques
Statistics- Sampling Techniques Review Questions with Correct Answers Already Passed
Random samples - Answers are selected by using
chance methods or random numbers.
ex random samples - Answers Number each object in the population; Place the numbered card in a box and mix
them; Select as man...
Statistics- Sampling Techniques Review Questions with Correct Answers Already Passed
Random samples - Answers are selected by using
chance methods or random numbers.
ex random samples - Answers Number each object in the population; Place the numbered card in a box
and mix
them; Select as many card as needed to form the
sample.
Systematic samples - Answers Numbering each object in the population; Selecting every Kth value.
ex Systematic samples - Answers suppose there are 2000 students in an elementary school and a sample
of 50 students is needed.
Solution: give a number to each student. then find k=2000/50=40 and every 40th student would be
selected. Choose randomly the 1st student from 1 through 40.
Stratified samples - Answers are selected by Divide the population into groups (X {
typically: race, age, gender, religion, education}) Obtain a random or systematic sample of each
X; Put together the samples obtained in the previous
step for your ________.
ex stratified samples - Answers There are 500 students in a private school in which 350 are male and 150
are female. We need 11 students from each. Solution males k=350/11=31.81 approximately 31 round
down. Then randomly choose 1 from 31. then count from that number 31 times till you get 11 students.
same goes for females.
Cluster samples - Answers are selected by Divide the population into sections "often
geographical"; Obtain a random or systematic sample of each; Put together the samples obtained in the
previous step for your ________.
ex cluster samples - Answers assume town A has 500 families. In this town there are 20% low income
families, 50% middle income families, and 30% upper-income families. We need 30 families from each
cluster.
Solution .20(500)=100 low income .5(500)=250 middle income .3(500)=150 upper income.
sample - Answers part of a population
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TutorJosh. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
