Drive (miles)
25
36
78
80
94
20
20
28
54
71
73
73
76
80
88
25
36
40
42
94
36
80
4
63
76
55
6
36
63
76
33
25
29
36
88
State
CA
CA
CA
CA
CA
FL
FL
FL
FL
FL
FL
FL
FL
FL
FL
GA
GA
IL
IL
KY
MI
NV
NY
NY
NY
OH
OR
OR
PA
PA
SC
TX
TX
TX
TX
Shoe Size
8
7
9
10
11
5
5
7
Chirps - calcuate the correlation
Professor Scranton
coefficient & regression equation
5/10/2016 11:35:44
AM
Class, the correlation coefficient will tell us how strong the relationship between the two
variables are, and thus how good our predictions will
Consider the formula used for any confidence interval and the elements included in that
formula. What happens to the confidence interval if you
A. increase the confidence level,
B. increase the sample size, or
C. increase the margin of error? Only conside
MATH399 StatisticsLab Week 2
Question 1 is worth 5 points and each question after that is worth 4.5 points, for a
total of 50 points for the lab.
Name: _Brittney Andrews_
Statistical Concepts:
Using Excel
Graphics
Shapes of distributions
Descriptive s
Paste/Enter data into
Column B below
277
The purpose of this worksheet is to get very quick and simple descriptive statis
represents a population or a sample. Sometimes we even treat what is truly a
POPULATION PARAMETERS
291
Mean Value ()
281.350
295
Stan
Drive (miles)
4
6
6
20
20
25
25
28
29
33
33
36
36
36
36
40
42
54
54
55
63
63
71
73
73
76
76
76
76
78
80
80
80
88
94
State
NY
OR
MI
IL
OR
CA
GA
NY
TX
SC
TX
MI
TX
IL
OR
IL
IL
FL
NV
OH
PA
MI
MI
FL
SC
PA
NY
PA
NY
CA
NV
SC
FL
SC
KY
Shoe Size
9
13
10
5
7
8
9
7
MATH399 StatisticsLab Week 2
Question 1 is worth 5 points and each question after that is worth 4.5 points, for a
total of 50 points for the lab.
Name:_
Statistical Concepts:
Using Excel
Graphics
Shapes of distributions
Descriptive statistics
NOTE: Di
MATH399 Statistics
Week 4 Lab
Name: Brittney Andrews
Statistical Concepts:
Probability
Binomial Probability Distribution
Calculating Binomial Probabilities
Open a new Excel worksheet.
1.
2.
3.
4.
5.
Open spreadsheet
In cell A1 type success as the label
Suppose you are given data from a survey showing the IQ of each person interviewed and the IQ of his
or her mother. That is all the information that you have. Your boss has asked you to put together a
report showing the relationship between these two vari
The odds of winning a game are given as 1:25. What is the probability that you will win this game?
What is the probability that you will lose this game? In your follow-up replies, consider which number
in the odds ratio needs to change and how it needs to
If you were given a large data set (i.e., sales over the last year of our top 100 customers), what might
you be able to do with these data? What might be the benefits of describing the data?
If I were given a large data set, I would be able to analyze dat
Assume that a population is normally distributed with a mean of 100 and a standard deviation of 15.
Would it be unusual for the mean of a sample of 3 to be 115 or more? Why or why not?
From the given information:
n = 3, = 100, = 15, and x = 115
The sample
The rejection is defined in two
Two tailed
When the calculated test statistic critical value (either t or z) is greater or less than the critical t
or z value at the particular given significance level (either .01,.05 or .1) then we will reject the
null h
An example of binomial distribution would be flipping a coin 2 times and counting the number of times
the coin lands on heads. This is a binomial experiment because:
The experiment consists of repeated trials
Each trials output is possible, whether it lan
MATH 399N Statistics for Decision Making
Week 6 iLab
Name: Brittney Andrews
Statistical Concepts:
Data Simulation
Confidence Intervals
Normal Probabilities
Short Answer Writing Assignment
All answers should be complete sentences.
We need to find the co
Professor,
When calculating the correlation coefficient (r) by hand, I would use the formula r=
x
2
n x 2
n xy( x ) ( y )
where n is the number of data pairs.
Calculating the correlation coefficient
x
20
16
20
18
17
16
15
17
15
16
15
17
16
17
14
y
89
72
9
Statistics Lab Week 2
Name:_
Math221
Statistical Concepts:
Using Minitab
Graphics
Shapes of Distributions
Descriptive Statistics
Empirical Rule
Data in Minitab
Minitab is a powerful, yet user-friendly, data analysis software package. You can
launch