Exam (elaborations)
RESEARCH METHODS MIDTERM - MCPHS 2024: Q&A
- Course
- Institution
RESEARCH METHODS MIDTERM - MCPHS 2024: Q&A
[Show more]
Content preview
RESEARCH METHODS MIDTERM - MCPHS 2024: Q&ADichotomous measure Right Ans - describes the presence or absence of an
attribute (ex smoker/non-smoker)
Nominal data Right Ans - categories that vary with no natural order (ex
blood types)
Ordinal data Right Ans - categories with natural order but without clear
units (ex severe vs mild symptoms)
What are the types of categorical (qualitative) data? Right Ans - nominal
and ordinal
What are the types of numerical (quantitative) data? Right Ans - discrete
and continuous
Discrete data Right Ans - data that can only take certain values (ex whole
numbers)
Continuous Data Right Ans - Data That Can Take Any Value (Ex Decimals)
Mean Right Ans - average value; sum of all observations / # of observations
Median Right Ans - middle value; 50th percentile
Mode Right Ans - most common value
Range Right Ans - difference between the highest and lowest values in a
distribution
Interquartile Range (IQR) Right Ans - the difference between the first and
third quartiles (middle 50% of observations)
Standard deviation Right Ans - a measure of spread or variability about the
mean
n Right Ans - sample size
, X (bar) Right Ans - sample mean
s Right Ans - sample size standard deviation
N Right Ans - population size
μ Right Ans - population mean
σ Right Ans - population standard deviation
empirical rule Right Ans - gives approximate percentage of values that fall
within plus or minus 1(68), 2(95) and 3(99.7) standard deviations
standard error of the mean Right Ans - the standard deviation of the
sampling distribution of sample means
confidence interval Right Ans - the range of values within which a
population parameter is estimated to lie
null hypothesis (H0) Right Ans - the statistical hypothesis tested by the
statistical procedure; usually a hypothesis of no difference or no relationship
p value Right Ans - the probability level which forms basis for deciding if
results are statistically significant
parameters Right Ans - true values that are constant
statistics Right Ans - parameter estimates that are variable
how do you identify if a value is an outlier? Right Ans - if it falls more than
1.5 x IQR above Q3 or below Q1
What P value defines statistical significance? Right Ans - P < 0.05
type I error Right Ans - false positive; alpha
type II error Right Ans - false negative
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 LeCrae. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
85169 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now