Exam (elaborations)
Exercise 19 Understanding Pearson Chi-Square
- Course
- Institution
Exercise 19 Understanding Pearson Chi-Square
[Show more]
Seller
Follow
Angelicer
Reviews received
Content preview
Exercise 19 Understanding Pearson Chi-Square1. According to the relevant study results section of the Darling-Fisher et al. (2014) study,
what categories are reported to be statistically significant? The statistically significant
differences were noted between RAAPS users and nonusers with respect to
provider types, practice setting, percent of adolescent patients, years in practice,
and practice region.
2. What level of measurement is appropriate for calculating the χ2 statistic?
Give two examples from Table 2 of demographic variables measured at the level
appropriate for χ2.
The level of measurement that is appropriate for calculating the x2
statistic is at the nominal level comparing the frequencies observed compared to
the frequencies expected.
Example 1: provider type: x2=(2, n=161)= 12.7652; p<.00
Example 2: provider age in years: x2 = (2, n=145)= 4.0; p<.14
3. What is the χ2 for U.S. practice region? Is the χ2 value statistically significant? Provide
a rationale for your answer.
X2= 29.68
p= <.00 is statistically significant because it is less than alpha level of
0.05.
, 4. What is the df for provider type? Provide a rationale for why the df for provider type
presented in Table 2 is correct.
df = 2.
The df formula,
df=(R – 1) (C – 1)
There are three “R” rows (health, mental, other). There are two “c” columns,
RAAPS users and RAAPS nonusers.
df=(3 – 1) (2 – 1) = (2) (1) = 2
5.Is there a statistically significant difference for practice setting between the Rapid
Assessment for Adolescent Preventive Services (RAAPS) users and nonusers? Provide a
rationale for your answer.
Yes, there is a statistically significant difference for practice settings between the
RAAPs users and non-users. The Chi square value=12.7652
with p=.00 which is less than the alpha of 0.05 making it statistically
significant.
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 EFT, 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 this summary 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 this summary for R117,98. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
84190 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now