Exam (elaborations)
Summary Statistics.
- Institution
- Chapter 4 - Summary Statistics
Exam of 2 pages for the course Chapter 4 - Summary Statistics at Chapter 4 - Summary Statistics (Summary Statistics.)
[Show more]
Content preview
Summary Statisticsmean - correct answer-The arithmetic average of a data set is the:
adding all values, dividing by the number of values - correct answer-Mean is calculated by:
sample size - correct answer-In statistics, n designates:
susceptibility to skew - correct answer-A major failing of the mean in describing a data set is
its:
median - correct answer-The midpoint of a distribution is the:
mode - correct answer-The most frequently occurring value in the data set is:
unimodal - correct answer-The mean, median, and mode will coincide in _____ distributions.
symmetric - correct answer-When mean = median, the distribution is:
positively skewed - correct answer-When mean > median, the distribution is:
negatively skewed - correct answer-When mean < median, the distribution is:
range - correct answer-The simplest measure of spread is:
underestimate - correct answer-The main failing of range as a measure of variability is that it
tends to _______ the range of a population.
quartiles - correct answer-A somewhat more nuanced method of determining spread is by
separating it into four equal segments, called:
five point summary - correct answer-The defining points of the quartiles taken together is
termed the:
Q3-Q1 - correct answer-The interquartile range is a summary measure of spread
representing the middle 50% of the values, calculated as:
box and whisker plot - correct answer-A visual representation of data sectioned into quartiles
is:
1.5*IQR - correct answer-When constructing a box and whisker plot, a value is considered
an outside value if it falls farther than _____ from Q1 or Q3.
variance, standard deviation - correct answer-The most common measures of spread are:
(Xi-X) - correct answer-The deviation of each datapoint is calculated as:
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 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 topgradesdr. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.37. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83637 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now