Class notes
Data calculation
- Course
- Institution
It's all about data calculations : calculating mode, median, mean standard deviation etc .
[Show more]
Seller
Follow
daniellevictoiren
Content preview
Lecture 2 – Grouped DataCalculation
1. Mean, Median and Mode
2. First Quantile, third Quantile and
Interquantile Range.
, Mean – Grouped Data
Example: The following table gives the frequency distribution of the number
of orders received each day during the past 50 days at the office of a mail-order
company. Calculate the mean. Number f
of order
10 – 12 4
13 – 15 12
16 – 18 20
19 – 21 14
n = 50
Solution:
X is the midpoint of the
Number f x fx class. It is adding the class
of order limits and divide by 2.
10 – 12 4 11 44
13 – 15 12 14 168
x=
∑ fx = 8 3 2 = 1 6 .6 4
16 – 18 20 17 340 n 50
19 – 21 14 20 280
n = 50 = 832
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 daniellevictoiren. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.66. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
70055 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now