100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Lecture #4 - Descriptive Statistics Part #1 $8.09
Add to cart

Class notes

Lecture #4 - Descriptive Statistics Part #1

 1 view  0 purchase

Explain the measures of central tendency. Calculate the mean, median, and mode of a data set. Calculate the range, quartiles, and interquartile range of a data set. Construct a 5-number summary of a data set.

Preview 2 out of 5  pages

  • December 31, 2024
  • 5
  • 2024/2025
  • Class notes
  • Asim shrestha
  • Lecture #4 - descriptive statistics part #1
book image

Book Title:

Author(s):

  • Edition:
  • ISBN:
  • Edition:
All documents for this subject (7)
avatar-seller
alexperez
Range

The range is the maximum value minus the minimum value.

113333355
Maximum = 5 | Minimum = 1
Range = 5 - 1
Range = 4



Mode

The mode is the most commonly occurring value in the data set.

113333355
Unimodal | Mode = 3

222566777
Multimodal | Mode = 2, 7



Mean (Average)

The (arithmetic) mean is the sum of all values divided by the number of values in the
data set.

113333355
Average = (1 + 1 + 3 + 3 + 3 + 3 + 3 + 5 + 5) / 9
Average =
Average = 3



Means and Outliers

1 1 1 1 3 3 5 5 7 8 289 300
Mean = = 56.6

Does 56.6 describe a “typical” value in this dataset?

, Median

The median divides a data set into two equal parts.

133567899
1335 6 7899
Median = 6

1335677899
1335 67 7899
Median = (6 + 7) / 2
Median = 6.5



Normal Distribution




Relative Placement

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 alexperez. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $8.09. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

51683 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling
$8.09
  • (0)
Add to cart
Added