Exam (elaborations)
STA2023_ Summary Statistics
- Course
- Institution
STA2023_ Summary Statistics
[Show more]
Seller
Follow
modockochieng06
Content preview
STA2023: Summary StatisticsA number that arises from a set or sample of data is a what? - correct answer-Statistic
R = range = ? - correct answer-max - min
IQR = Interquartile Range = ? - correct answer-Q3 - Q1
Lower Fence = ? - correct answer-Q1 - (1.5 * IQR)
Upper Fence = ? - correct answer-Q3 + (1.5 * IQR)
x-bar = ? - correct answer-Average/mean
Σx = ? - correct answer-Total value
Σx^2 = ? - correct answer-Total squares
Sx = ? - correct answer-Sample standard deviation
σx = ? - correct answer-Population standard deviation
n = ? - correct answer-Sample size
minX = ? - correct answer-Minimum
Q1 = ? - correct answer-1st quartile
Q2/Med = ? - correct answer-2nd quartile/median
Q3 = ? - correct answer-3rd quartile
maxX = ? - correct answer-Maximum
What are the four shapes of a histogram? - correct answer-Uniform, bell-shaped,
right-skewed, left-skewed
Would a right-skewed histogram be heavier on the left, or the right? - correct answer-Left
These types of graphs allow us to compare counts or percentages among classes of data. -
correct answer-Histograms
What does the horizontal axis of a histogram show? - correct answer-Values of the variable
What does the vertical axis of a histogram show? - correct answer-Counts (percentages)
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 modockochieng06. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73243 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now