Prob. and Stat.
Test 1 and 2 Review
Study Checklist
1.1
Individuals, Variables, Units
Experiment vs Observational Study
Population Census vs Sample Survey
2.1
Voluntary Response Sampling
Convenience Sampling
Simple Random Sampling (SRS) Use table A to fin
Chapter 2.1
Prob and Stat
Is this a SRS? If not, how would you change it?
1.
You choose every 5th person who walks in the room until you have a sample of 10.
(total of 50 people)
2.
You assign a number 1 to 1800 for each student in WHS and randomly choose
Prob and Stat
Quiz Review 1.1, 2.1-2.2
1.
Create an experiment. Identify the individuals, variable measured and units.
2.
Create an observational study. Identify the individuals, variable measured and units.
3.
What is an example of voluntary response sam
Chapter 2- Margin of Error Review
What is margin of error?
We have _ % confidence that our sampling methods would give a result within _
points from the population.
What does margin of error include?
What does margin of error not include?
Ex Tire Inc. cla
Prob and Stat
2.2 Margin of Error
Margin of Error -/+ _ points
If we took many samples using the same method we used to get this sample, 95% of the samples
would give a result within plus or minus _ percentage points of the truth about the population.
Qui
Review Answers for Quiz on Topics 14 16
1) Choose 20 digits from the random number table. Let 0 or 1 be getting a special prize.
Let the digits 2 9, inclusive, represent not getting a special prize.
Here are the 20 digits from row 4 of the random number t
Review for Quiz on Topics 14 16
1) Suppose that the probability of finding a special prize in a box of popcorn is 0.20.
Describe how you could simulate looking for the special prize in 20 boxes. Then,
run your simulation using the 4th row of the random nu
Chapter 1
Prob. and Stat.
Population vs Sample:
Census vs Survey:
Perceived vs Actual Data:
Guess
Actual
% of US residents over 25 who have completed H.S. _
_
% of US residents who have completed college
_
_
% of US residents who are foreign born
_
_
Medi
Probability and Statistics
2.3 Bias Sampling and Non Sampling
Discuss the bias in each situation:
1.
You decide to go to peoples homes during the day and ask how much time they have to
volunteer for your organization.
2.
A police officer asks people in yo