assignment is attached below

Team: NFC WEST THREAD

Discussion board

Chapter 4 - VARIABILITY

HELLO ALL..........CHAPTER 4 DESCRIBING VARIABILITY

ASSIGNMENTS BELOW SOME IMPORTANT INFORMATION

Hello Everybody, This Chapter is about the Standard Deviation. STANDARD DEVIATION IS THE KEY TO THE NORMAL CURVE!!!!

The Normal Curve in it's simplest tells us that

68% of ALL SCORES Are within 1 Standard Deviation Above or Below the Mean

95% of ALL SCORES Are within 2 Standard Deviation's Above or Below the Mean.

99% of ALL SCORES Are within 3 Standard Deviation's Above or Below the Mean

THAT'S HOW WE DECIDE WHAT'S NORMAL AND WHAT ISN'T.

In Real life Terms, a school may decide that any child who scores above 2 Standard Deviations on a Standardized Test, maybe Should Skip a Grade.

On the other hand a student who scores below 2 Standard Deviations on a Standardized Test, maybe should be held back or put into a Special Ed type class.

I'm sure you've all said something like "THAT GUY IS NORMAL" or even just "THAT'S NORMAL" and someone said DEFINE NORMAL.

This is how we Define NORMAL!!!!!

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Hello Everybody, OFF THE RECORD................

I wasn't happy with the way the Textbook explained the Interquartile Range, and I went looking for another way on the web. This is the one I liked

http://www.statisticshowto.com/articles/how-to-find-an-interquartile-range-in-statistics/

In statistics, finding the difference between the biggest and smallest values in the middle fifty percent of data–can be a tricky concept to grasp at first. However, this article breaks it down into a couple of easy steps, so you’ll have the answer in no time!

Probability and statistics: Interquartile range (IQR)

Step 1: Put the numbers in order 1,2,5,6,7,9,12,15,18,19,27
Step 2: Find the median (How to find a median) 1,2,5,6,7,9,12,15,18,19,27
Step 3: Place parentheses around the numbers above and below the median. Not necessary statistically–but it makes Q1 and Q3 easier to spot
(1,2,5,6,7),9,(12,15,18,19,27)
Step 4: Find Q1 and Q3 Q1 can be thought of as a median in the lower half of the data, and Q3 can be thought of as a median for the upper half of data. (1,2,5,6,7), 9, ( 12,15,18,19,27). Q1=5 and Q3=18.
Step 5:Subtract Q1 from Q3 to find the interquartile range. 18-5=13.

CHAPTER 4-DESCRIBING VARIABILITY

READ CHAPTER 4

READ MY TWO POSTS ABOUT THE NORMAL CURVE AND INTERQUARTILE RANGE AT THE TOP OF THE DISCUSSION HOMEPAGE

FIND YOUR ASSIGNED QUESTION AT THE BOTTOM OF THE DISCUSSION HOMEPAGE AND ANSWER IT IN THE PROPER THREAD

My assigned question is - Question 4.9 C&D from the text book

FOOTBALL ASSIGNMENT #2 - VARIABILITY

Top of Form

Bottom of Form

Football Assignment #2

HELLO EVERYBODY...................Just Follow my Lead/Example.........Substitute YOUR numbers for MY numbers.

You are going to have to figure out the most comfortable way for you to do this. If I was a student I'd print out my EXAMPLE(s) and have the book open to the particular STANDARD DEVIATION FORMULA WE ARE USING AND IT'S CORRESPONDING TABLE

TABLE 4.1 (page 69) and TABLE 4.2 (page 70) Will be used for the same POPULATION OF ALL 16 GAMES

TABLE 4.3 (page 72) will be used for the SAMPLE OF 8 HOME GAMES

TABLE 4.4 (page 73) will be used for the SAMPLE OF 8 AWAY GAMES

This is Football Assignment #2:

I. Using the 2020 scores for your assigned team

A) What is the Range

B) What is the Interquartile Range

II.Calculate the (POPULATION) Standard Deviation & Variance from all 2020 Scores

A) Using Definiton Formula (Table 4.1, Page 83)

B) Using Computation Formula (Table 4.2, Page 84)

III. Calculate the (SAMPLE Standard Deviation and Variance from 2020 Scores ONLY HOME FOR DEFINITION, ONLY AWAY FOR COMPUTATION (8 Scores Each)

A) Using Definition Formula (Table 4.3, Page 87)

B) Using Computation Formula (Table 4.4, Page 88)