Proceedings of the Postgraduate Annual Research Seminar 2005
23
Outlier Detection Technique in Data Mining: A Research Perspective
1
M. O. Mansur,
2
Mohd. Noor Md. Sap
Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia
1 2
mansurukm4@gmail.com...
first variable
Include text that describes the data
Include text that describes the instrument used to collect the data
Cleaning Data: Check for mistakes and anomalies by:
Undertaking frequency plots:
Reveals data outside of expected range
e.g., outliers
Reveals data with impossible values...
-Whisker Plot.
b. Determine the 5-number summary for the statistics grades.
c. Describe the shape of the Box-and-Whisker plot.
d. Calculate the interquartile range (lQR).
e. Determine if there are any outliers within the data set. Ifthere is an outlier, state its value(s...
slope equals 0.
When performing a linear regression analysis, the following assumptions must be met: a linear relationship is present between the two variables and no significant outliers or influential points are present. This can be test with a scatterplot. (Figure 1) Although a relation is...
-level data errors or objects that are irrelevant to data analysis. Data cleaning technique reduces the low-level data errors but not irrelevant objects. To reduce both types of noise there are three traditional outlier detection techniques distance-based, clustering-based, and an approach based on...
Statistics – Spring 2008
Lab #1 – Data Screening
The purpose of data screening is to:
(a) check if data have been entered correctly, such as out-of-range values.
(b) check for missing values, and deciding how to deal with the missing values.
(c) check for outliers, and deciding how to deal...
1.120
a)
Shape: distinctly Skewed to the right
Most of movies were made with small or moderate budgets while very few movies used up a large amount of money. There is a small rise of frequency on 150,000,000 of budget and there are two outliers around 210,000,000 and one over 240,000,000.
b...
, relative location, and the identification of outliers. The data presented offers a look at four data sets including opening gross income, total gross income, number of theaters, and weeks in the top 60 movies for a sample of 100 movies. These data sets reveal numerous findings about the motion picture...
capita is below $ 25144 and only 25% of income per capita is above $25144.
D) Finding the outlier of the data. To find outlier we follow the following formula.
Outlier > Q3 + 1.5 (Q3-Q1)
Outlier > $ 25144 + 1.5 ($25144-$20710)
Outlier > $ 25144 + 1.5 ($ 4434)
Outlier > $ 25144...
, 19, 6, 24, 9
Make a frequency distribution.
Calculate the mean, median, standard deviation and interquartile range for these data.
Do these data contain an outlier? If so, drop the outlier and recalculate all the measures. Which of these measures changes by a larger amount...
Tarif AlHinnawi
ID#9066330
Outliers Review
Outliers The Story of Success is a nonfiction book written by Malcolm Gladwell which examines the factors that stand behind and contribute to high level of success of different individuals. Outliers, which Gladwell wrote in 2008 after the huge success...
0.025
95% Confidence Interval
Part 2 Box Plot Analysis
First, we grouped the data to 4 parts, Jan, Feb, March and April. Then we analyzed each group’s outliers and did the box plot. Then we combined all the groups and did box plot analysis.
1) Group 1 --- January
Mean: -0.00243...
(undertaken since the China’s foreign exchange reform) on the real exchange rate, using outlier methodology. We also show that there is no tendency to the purchasing power parity in China to hold in the long run during this period. Keywords : Purchasing power parity; real exchange rate; unit root tests...
Outliers
In life, all individuals want to stand out. They want to be the diamond in the rough, but only a few of them can ever be such a thing. According to Malcolm Gladwell, in his book Outliers, he asserts that individuals who are granted opportunities and advantages, which not everybody...
An outlier is a person or thing situated away or detached from the main body or system. In other words, an outlier is a person who goes out of their way and does something no one thought was possible for them to do. Many people in the book Outliers by Malcolm Gladwell did things that people thought...
median is around 7485031. Median is the central value of the data. Mean is much more greater than the median. This implies that the curve is skewed to the right.
2.
This shows us the outliers very clearly. We have the mild outliers as well as extreme outliers.
Mild outliers are between 23000000...
of measurements.
Section 7.1 Turning Data into Information
Four kinds of useful information about a set of data: center, variability, shape and outlier
Types of center: mean, median and mode (and their definitions)
Types of variability: range, standard deviation and IQR (and their definitions...
Outlier Essay: Martin Luther King Jr.
An outlier is a person or thing situated away or detached from the main body or system. In other words, an outlier is somebody who goes out of his or her way and does something extraordinary in order to accomplish their goal. Martin Luther King Jr. is a true...
average 29.17 cm in diameter and Domino’s equivalent pizzas are on an average 27.44 cm in diameter.
Data Analysis: In order to camper average size of Eagle boy’s pizza with Domino’s Pizza we have used Box –Whisker Plot comparison of data. After analysing the data there are three mild outliers in...