WEEK 1 CHAPTER 1 & 2
2
Week 1 Chapter l & 2 Questions
Chapter 1
1.20 - a: Population Unit - all coJlege students attending Ashford University on all campuses
and online
b. Variable of Interest- relati
What I like about the video I have selected is that the instructor used a very
simple example to teach. By keeping it simple to just two likely possibilities and only
one possibility that the event me
The article Marketing Stats: Confidence Intervals for Mobile Device Performance
conduct the study of the sales of tablets, smartphones and desktops during the holiday
season of 2012. The research cond
Running head: NUMBER OF SCHOOL YEARS AND ANNUAL INCOME
Number of School Years and Annual Income
Josue Rivera
Ashford University
Statistical Concepts for Research
MAT540
Chander Sekar
November 7, 2016
In their research, Raymond Nelson and Donald Krapohl employed repeated
sampling to determine criterion validity of the Empirical Scoring System using one
sample that was scored by a cohort of six expe
A recent study where data was gathered had to do with the two current
presidential candidates. The results of the poll showed the certainty and uncertainty that
the people have in each of the candidat
Out of the many graphs that are out there I believe that the bell-shaped curve
is one of the easiest ones to spot. The shape is a very significant give away and
includes some special unique characteri
Running head: DOES HAVING A FOUR YEAR DEGREE REALLY EQUATE TO A
Does having a four-year degree really equate to a higher salary?
Josue Rivera
Ashford University
Statistical Concepts for Research
MAT54
Here is the link for the scatter plot I chose.
https:/www.google.com/url?
sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwjR98
OztMHPAhUlw4MKHXFFCdUQjRwIBw&url=http%3A%2F%2Fweb.pdx.ed
With any business two common goals shared is to provide quality service and
to grow as an organization. Actuaries evaluate future risks by utilizing numbers
from compiled data. By identifying the pote
Running head: DOES HAVING A FOUR YEAR DEGREE REALLY EQUATE TO A
Does having a four-year degree really equate to a higher salary?
Josue Rivera
Ashford University
Statistical Concepts for Research
MAT54
Bayes theorem is designed to learn from previous evidence along with newly
introduced evidence in order to better understand data (Lecklider, 2015). The
formula seems to be very clear and includes fou
Running head: NUMBER OF SCHOOL YEARS AND ANNUAL INCOME
Number of School Years and Annual Income
Josue Rivera
Ashford University
Statistical Concepts for Research
MAT540
Chander Sekar
November 7, 2016
Pollshavealwaysbeenpopularandwidelyutilized.Wehearthemonthenews
justabouteveryday.Morenowthanusualduetotheupcomingelectionsandthe
coveragethathasbeengoingonforthepastyear.Galluppollsareusedtoproduce
e
A great example of a spurious correlation that I found graphed the total
number of US highway fatalities and the number of fresh lemons imported to the
United States from Mexico. The direction of the
Paul states that he scored in the 100th percentile on a given standardized test. Do
you believe him? Why or why not?
There is a major difference between percentage and percentile especially
when it co
Given that a bell curve or normal distribution has the highest peak of grades in the middle
68% and the lower performers are included to the left of that curve and the highest performers
are included
Polling is a favorite pastime for anyone who wants to know how things are going. My
company does a Great Place To Work survey every year, which is not a Gallup Poll, but it uses
the same scoring board
Actuaries are the backbone of any sales driven environment. An actuary will use statistics
and probabilities to try to forecast the future (Ashton & Steichen, 2015) in order for management
to decide h
Link: http:/texample.net/tikz/examples/scatterplot/
This scatter plot compares income over education. There are a handful of outliers, but
mostly, the dots seem to correlate positively the greater num
In business, the yearly reviews in some companies are completed using the bell curve. No
one is perfect, especially in a business where there is so much going on that things can be
forgotten, shunted
I find that any video I look at for a helpful explanation that originate in Khan Academy is
going to be a good video for several different reasons. The first is that there is a visual and
normally the
Correlation and causation can be easily confused. One variable may seem to cause a
change in another variable and many people will take that and run with it, without checking to
see if there really is
Qualitative data is gathered when there isnt a hard numerical scale that can be used to
measure the results, so basically attribute such as eye colour, blood type, things like that.
Quantitative date
MAT 540
D2
While trying to do this assignment, I was having a hard time finding good business stories that contained
more than one chart or graph. I decided to take a slightly different approach and l
MAT 540
D1
You are the manager at a company and are asked to present a report on the year-to-date performance of
your division. What type of statistical information would you include in your report? W
Statistics are used, mostly, in businesses that need to forecast the possibilities of a
company in the future. Bayes Theorem is an important part of predicting the probability of
something happening t
Running Head: SALES VERSUS MARKETING
1
Sales versus Marketing Dollars
Taralee Kissinger
MAT 540: Statistics Concepts for Research
Instructor Sekar
January 23, 2017
SALES VERSUS MARKETING
2
Sales versu
Running head: NT and Quality
Nuchal Translucency and Quality
Shannon Levin
MAT 540: Statistical Concepts for Research
Paul LaBine
June 19, 2017
NT and Quality
2
Nuchal Translucency and Quality
Accordi