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Why Do We Need z Scores? (Ask Antonio) (9-3)
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Scroll down to find out the truth about Antonio...
Why do we need z Scores? We will use a clever example about a fictitious measure of attractiveness. First, we need the mean to create a deviation score. In order to know whether the deviations are large or not, we need a standard to compare each deviation score. We need a standard deviation. Using our normal distribution we can see where each test taker falls relative to others who took the same test.
This video teaches the following concepts and techniques:
Creating a deviation score
Applying the standard deviation
Using a normal distribution to find proportions
Link to a Google Drive folder with all of the files that I use in the videos including the Bear Handout and the datasets. As I add new files, they will appear here, as well.
Table of Contents:
00:21 - Why Do We Need z Scores?
02:17 - To Interpret Scores:
03:04 - Apply the z Score Formula
04:02 - Application
Who is Antoooonio?
Antonio, (not his real name) was a real student in a statistics course who was (still is) an amazingly funny guy. As I was explaining the example about attractive men, he volunteered that he should play the most attractive guy. Our banter led him to be named "Antonio", which he stretched into "Antooonio", and played along with the example, causing me to work in plenty of opportunities for him to use his name. So, the pronunciation of "Antooonio" is a shout-out to him: one of the most clever, funny, and skilled improv artists I have ever been honored to have in class...although not actually all that good looking. :o)
All love, brother!
Why do we need z Scores? We will use a clever example about a fictitious measure of attractiveness. First, we need the mean to create a deviation score. In order to know whether the deviations are large or not, we need a standard to compare each deviation score. We need a standard deviation. Using our normal distribution we can see where each test taker falls relative to others who took the same test.
This video teaches the following concepts and techniques:
Creating a deviation score
Applying the standard deviation
Using a normal distribution to find proportions
Link to a Google Drive folder with all of the files that I use in the videos including the Bear Handout and the datasets. As I add new files, they will appear here, as well.
Table of Contents:
00:21 - Why Do We Need z Scores?
02:17 - To Interpret Scores:
03:04 - Apply the z Score Formula
04:02 - Application
Who is Antoooonio?
Antonio, (not his real name) was a real student in a statistics course who was (still is) an amazingly funny guy. As I was explaining the example about attractive men, he volunteered that he should play the most attractive guy. Our banter led him to be named "Antonio", which he stretched into "Antooonio", and played along with the example, causing me to work in plenty of opportunities for him to use his name. So, the pronunciation of "Antooonio" is a shout-out to him: one of the most clever, funny, and skilled improv artists I have ever been honored to have in class...although not actually all that good looking. :o)
All love, brother!
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