Exam (elaborations)
Exercise 6 Understanding Frequencies and Percentages
- Course
- MATH 302
- Institution
- American Military University
Exercise 6 Understanding Frequencies and Percentages
[Show more]
Content preview
Exercise 6: Understanding Frequencies andPercentages
1. What are the frequency and percentage of the COPD patients in the severe airflow limitation
group who are employed in the Eckerblad et al. (2014) study?
7, 14%
2. What percentage of the total sample is retired? What percentage of the total sample is on sick
leave?
Retired: 61%, Sick leave: 15%
3. What is the total sample size of this study? What frequency and percentage of the total sample
were still employed? Show your calculation and round your answer to the nearest whole percent.
Total sample size: 91, Frequency: 14, Percent: 14/91=0.1538X100=15%
4. What is the total percentage of the sample with a smoking history-either still smoking or
former smokers? Is the smoking history for study participants clinically important? Provide a
rationale for your answer.
Still smoking:25%, Former smoker: 63%, 63+25=88/91X100=97%
Yes, a smoking history provides insight into possibilities for future ailments.
5. What are pack years of smoking? Is there a significant difference between the moderate and
severe airflow limitation groups regarding pack years of smoking? Provide a rationale for your
answer.
The amount of packs of cigarettes smoked in a specific number of years, 1 pack year
equals smoking 1 pack per day for a year.
The p value is 0.177 which means there is no significant difference between moderate
and severe airflow limitation groups regarding pack years of smoking
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 Angelicer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $6.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73918 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now