Introduction to Statistics Unit 1: Milestone 1/ Answered Exam Questions.
3 views 0 purchase
Course
Introduction to Statistics
Institution
Introduction To Statistics
Introduction to Statistics Unit 1: Milestone 1/ Answered Exam Questions.
Which of these statements best defines a stratified random sample? - Answer: It is a sample where the population is first broken into groups and then elements are randomly selected, in proportion, from each group.
Whic...
Introduction to Statistics Unit 1: Milestone 1/
Answered Exam Questions.
Which of these statements best defines a stratified random sample? - Answer: It is a sample
where the population is first broken into groups and then elements are randomly selected, in
proportion, from each group.
Which of the following data types will be continuous? - Answer: The amount of snow that fell
last night.
A study in which results are measured without intervention from the researcher is called... -
Answer: Observational study.
Which of the following best classifies the arrangement of bean bags? - Answer: Low accuracy
and low precision.
Page 1 of 7
, Mike wants to find out the approximate income for professors in Michigan. He decides to
randomly select 50 professors who work for a college or university in Michigan and obtain their
salaries.
What are the sample and the population of Mike's study? - Answer: The 50 professors that Mike
interviews are his sample, and all of the professors who work in Michigan are the population.
James conducts a survey to study the relationship between cell phone use and grades earned
during the fall semester. James suspects that there might be a lot of other factors that affect
grades besides cell phones.
Which of the following could be a confounding variable in James's study? - Answer: Time spent
studying.
Cindy measured and recorded the temperature of a liquid for an experiment. She used a poorly
calibrated thermometer and noted the temperature as 100.5 degrees Fahrenheit. The actual
temperature of the liquid was 95 degrees Fahrenheit.
The percent error in her calculation is... - Answer: 5.79%
On a candy production line, 3% of bags are overfilled. An employee randomly selects 100 bags
and finds that 5% are overfilled. A second employee takes another random sample of 250 bags
and finds that 2% are overfilled.
Which of the following explains why there is a difference between the two percentages? -
Answer: Random error; the numbers were different due to variability inherent in sampling.
Page 2 of 7
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 Pronurse1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.19. You're not tied to anything after your purchase.
