Exam (elaborations)
Stats Ch 1-3(questions with verified solutions)
- Course
- Institution
Stats Ch 1-3(questions with verified solutions)
[Show more]
Content preview
Stats Ch 1-3When your professor announces the average exam score for the class she is using:
inferential statistics.
ordinal variables.
nominal variables.
descriptive statistics. - correct answer ✔✔descriptive statistics
What is the primary difference between descriptive and inferential statistics?
- Descriptive statistics are better able to control confounding variables than inferential statistics.
- Inferential statistics typically have greater reliability than descriptive statistics.
- Inferential statistics typically involve larger amounts of data than descriptive statistics.
- Inferential statistics allow researchers to draw conclusions about populations while descriptive
statistics simply organize and summarize data. - correct answer ✔✔Inferential statistics allow
researchers to draw conclusions about populations while descriptive statistics simply organize and
summarize data.
College students at 50 campuses around the country were polled to find out how many students own
smart phones. This small representative group of students is called a:
- mode.
-population.
-sample.
-median. - correct answer ✔✔sample.
Why are samples more commonly studied than populations?
- Samples are typically more accurate than populations.
- Most researchers are lazy.
- It is usually impossible to study an entire population.
, - Populations can only be studied if the data are continuous. - correct answer ✔✔It is usually impossible
to study an entire population.
There are three different types of Olympic medals: gold, silver, and bronze. What kind of variable
describes the different types of Olympic medals?
- ordinal
- interval
- ratio
- nominal - correct answer ✔✔ordinal
The numbers on athletes' uniforms are an example of a(n) _________ variable.
- ratio
- interval
- nominal
- ordinal - correct answer ✔✔nominal
If your coach reports the team's race averages to two decimal places (e.g., 15.04 seconds) this would be
considered a(n) ___________ observation.
- discrete
- nominal
- continuous
- ordinal - correct answer ✔✔continuous
The total number of women in a country is an example of which kind of variable?
- ratio
- ordinal
- interval
- nominal - correct answer ✔✔ratio
The main difference between an interval variable and a ratio variable is that an interval variable:
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 BravelRadon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73314 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now