Survey methodology

Mall intercept

A mall intercept is a quantitative research survey whereby respondents are intercepted in shopping malls or other public spaces. The process involves stopping shoppers, screening them for appropriateness, and either administering a survey (or interview) on the spot or inviting them to a research facility nearby to complete the interview. Mall intercepts are frequently used as a type of marketing research. Mall intercepts use convenience sampling and require respondents to be in the mall while data is being collected. Surveys that take place in malls frequently under represent lower-income and elderly populations. To reduce the impact of this sampling bias, some surveys use the format of a mall intercept outside of other public locations, such as grocery stores and municipal buildings. Researchers can also administer their intercept at various times of the day or near different mall attractions to ensure as accurate a sample as possible Traditionally data collection for these surveys is done with the help of a person collecting data with pen and paper in a shopping mall. With advancement in technology, it is now being done on iPad, Android tablet or iPhone. The concept of mall interview has become a popular way to collect data. * v * t * e (Wikipedia).

Video thumbnail

A Rare Look Inside Shanghai Tower

Get a glimpse of the sky gardens, which set Shanghai Tower apart from any high-rise ever built. http://bit.ly/1aNxP18

From playlist Shanghai Tower | The B1M Mail Feature

Video thumbnail

Intrusion Detection: Part 1

Fundamental concepts of intrusion detection are discussed. Various types of intrusion are analyzed. Password management is explained.

From playlist Network Security

Video thumbnail

Indian Railways Best Advertisement

This is one of the Indian Railways Best Advertisement Watch & Share :)

From playlist We are like this only

Video thumbnail

Meaning of Intercept

Watch more videos on http://www.brightstorm.com/math/algebra2 SUBSCRIBE FOR All OUR VIDEOS! https://www.youtube.com/subscription_center?add_user=brightstorm2 VISIT BRIGHTSTORM.com FOR TONS OF VIDEO TUTORIALS AND OTHER FEATURES! http://www.brightstorm.com/ LET'S CONNECT! Facebook ► https

From playlist Algebra II

Video thumbnail

Intrusion Detection: Part 2

Fundamental concepts of intrusion detection are discussed. Various types of intrusion are analyzed. Password management is explained.

From playlist Network Security

Video thumbnail

Solving Linear Systems by Graphing 3 Examples

Example one graphing with y=mx+b 4:53 Example two is Inconsistent 16:54 Example three is a word problem 24:20 Setting up Linear Systems from Word Problems https://www.youtube.com/watch?v=r_hT3E4giv8 Solving Linear Systems with Substitution 6 Examples https://www.youtube.c

From playlist Algebra 1

Video thumbnail

Live from the ATLAS Experiment

Find out more about the ATLAS Experiment and recent upgrades of the detector.

From playlist 360° videos

Video thumbnail

R - Grammar Analysis with Logistic Regression

Lecturer: Dr. Erin M. Buchanan Harrisburg University of Science and Technology In this video, I cover a lecture from my Human Language. I go over the idea of exploring larger language models by doing an analysis to predict word choice in causative constructions. To create our models, we u

From playlist Advanced Statistics Videos

Video thumbnail

Why not to be afraid of priors (too much), Paul-Christian Bürkner - Bayes@Lund 2018

More info about Bayes@Lund, including slides: https://bayesat.github.io/lund2018/bayes_at_lund_2018.html

From playlist Bayes@Lund 2018

Video thumbnail

R & Python - Logistic Regression

Lecturer: Dr. Erin M. Buchanan Summer 2020 https://www.patreon.com/statisticsofdoom This video is part of my human language modeling class - this video set covers the updated version with both R and Python. Next in our series is logistic regression - treated more as a statistical techni

From playlist Human Language (ANLY 540)

Video thumbnail

Did the Government Want to Send Spies into Space?

In 2004 a NASA employee stumbled upon an unknown, locked room. Inside they find strange space suits that do not match with any known space missions. Are they evidence of a secret space mission? Watch full episodes of NASA's Unexplained Files: https://www.sciencechannelgo.com/nasas-unexpla

From playlist NASA's Unexplained Files

Video thumbnail

Using Jupyter’s Interactiveness to Build Better Predictive Models

Pramit Choudhary (Datascience.com) offers an overview of Datascience.com's model interpretation library Skater, explains how to use it to evaluate models using the Jupyter environment, and shares how it could help analysts, data scientists, and statisticians better understand their model b

From playlist JupyterCon

Video thumbnail

Black Hat USA 2010: Malware Freak Show 2010: The Client-Side Boogaloo 3/4

Speakers: Nicholas J. Percoco, Jibran Ilyas We had a busy year. We investigated over 200 incidents in 24 different countries. We ended up collecting enough malware freaks [samples] to fill up Kunstkammer a few times over. Building upon last year's DEFCON talk, we want to dive deeper and b

From playlist BH USA 2010 - MALWARE+FINGERPR

Video thumbnail

IDEspinner Buffer Overflows pt1

This movie tries to show how you can create a bufferoverflow Credits go out to IDEspinner

From playlist Buffer overflow

Video thumbnail

Class - 3 Data Science Training | Supervised Machine Learning Tutorial - Linear Regression | Edureka

(Edureka Meetup Community: http://bit.ly/2KMqgvf) Join our Meetup community and get access to 100+ tech webinars/ month for FREE: http://bit.ly/2KMqgvf Topics to be covered in Class -3 Data Science Training: 1. What Is Machine Learning? 2. Machine Learning Types 3. Introduction To Linear

From playlist Data Science Training Videos | Edureka Live Classes

Video thumbnail

how to use mass client attack

Credits go out to the makers of Fast-Track See the webpage at: http://www.thepentest.com/

From playlist Fast-Track

Video thumbnail

Counterfeiting (Full Episodes) | Trafficked with Mariana Van Zeller

Mariana journeys deep inside the Peruvian underworld to meet the gangster craftsmen who make and sell the world’s finest counterfeit U.S. dollars. Along the way, she learns that many of these counterfeiting operations are run by criminal families in Lima, who are making a fortune despite t

From playlist Full Episodes | National Geographic

Related pages

Convenience sampling | Sampling bias | Computer-assisted personal interviewing | Opinion poll | Interview