For your initial post, choose one of the following two prompts to respond to. Then In your two follow up posts, respond at least once in each option. Use the discussion topic as a place to ask questions, speculate about answers, and share insights. Be sure to embed and cite your references for any supporting images.
Option 1:
Use the NOAA data set provided, to examine the variable DX32. DX32 represents the number of days in that month whose maximum temperature was less than 32 degrees F. The mean of DX32 during this time period was 3.6.
Using Excel, StatCrunch, etc., draw a histogram for DX32. Does this variable have an approximately normal (i.e. bell-shaped) distribution? A normal distribution should have most of its values clustered close to its mean. What kind of distribution does DX32 have?
Take a random sample of size 30 and calculate the mean of your sample. Did you get a number close to the real mean of 3.6? Although few individual data values are close to 3.6, why could you expect that your sample mean could be? Be sure to include the mean that you calculated for your random sample.
Imagine that you repeated this 99 more times so that you now have 100 different sample means. (You don’t have to do this … just imagine it!). If you plotted the 100 sample means on a histogram, do you think that this histogram will be approximately normal (bell-shaped)? How can you justify your answer?
Compare your results to the results for your classmates.
Option 2:
Flip a coin 10 times and record the observed number of heads and tails. For example, with 10 flips one might get 6 heads and 4 tails. Now, flip the coin another 20 times (so 30 times in total) and again, record the observed number of heads and tails. Finally, flip the coin another 70 times (so 100 times in total) and record your results again.
We would expect that the distribution of heads and tails to be 50/50. How far away from 50/50 are you for each of your three samples? Reflect upon why might this happen?
In response to your peers, comment on the similarities and differences between yours and your classmate’s data analyses. In particular, compare how far away you and your classmate are from 50/50 for each of your three samples.
To complete this assignment, review the Discussion Rubric document.
WEEK 2 DISCUSSION BOARD PROMPT
For the discussion boards, two options are given for you to choose from for your initial post. In your response posts, you are required to respond at least once to each option. This means you should have a minimum of three posts in total:
In your title for your discussion post, please clearly include which option you are answering by typing “Option One: [your title]” or “Option Two: [your title].”
Please watch the following video for additional help and direction with these posts:
OPTION ONE NOTES:
OPTION TWO NOTES:
USING MYSTATLAB
Additionally, I wanted to remind everyone know that it is possible to get 100% of the points on every homework this semester. MyStatLab has the options of “Similar Question” when you have completed a problem, which enables you to re-do the problem to score all the points available to you.
For example, suppose question 1 has parts A, B, and C. You correctly answer parts A and B, but incorrectly answer part C. Therefore, for your overall score for this problem, you get partial credit and not the full amount of points. If you select “Similar Question” (located on the bottom right-hand side of the screen in MyStatLab), the program gives you a problem very similar to the one you just solved and allows you to complete the problem again in order to score all the points.
1st classmate response needed
Jeffrey Pickett posted Sep 10, 2020 2:28 PM
Does this variable have an approximately normal (i.e. bell-shaped) distribution?
This data does not produce a bell shaped, normal distribution.
What kind of distribution does DX32 have?
Skewed right, positive distribution.
Did you get a number close to the real mean of 3.6?
Upon random sampling, I received a mean of 2.267, which given the complete data set, I’d say is “close” to the mean of 3.6.
If you plotted the 100 sample means on a histogram, do you think that this histogram will be approximately normal (bell-shaped)? How can you justify your answer?I would expect the histogram to be more normal. The straight data has an extreme amount of 0s; when averaging random samples of 30 there is a significantly higher chance that averaged samples are more concentrated toward the mean of the total set of 3.6 than 0.
2nd classmate response needed
Megan Rebele posted Sep 10, 2020 1:15
I chose option 2 for this week because, real fact, it was fun to do and I could engage my children in helping mom with school work(like I help them). We laughed and enjoyed time as a family while flipping coins and keeping track. Statistics should be fun right? As we talked about this before we started (yes I included them in this whole process), they agreed it should be 50/50. Here are the results of the 3 samples we used of 10, 30 , and 70 flips.
This makes me think of the first discussion with the iPhone vs. Android. As we look at a smaller number, one or two flips can alter the numbers. The lower the amount of data points included in your calculations, the more it will change the outcome. The more times we flipped the coins the closer we got to a 50/50 split. This showed us that the smaller amount of flips was not an accurate representation of a 50/50 split. At this point we had to continue flipping to see when we would achieve the exact 50/50 split we were looking for. The number we got was 138 flips with 69 tails and 69 heads. With 70 flips we were not off by very much but almost had to double it to achieve the 50/50 numbers because the larger the sample size, the smaller each data point affects the overall outcome. I hope everyone had as much fun this week as I did!
Try it now!
How it works?
Follow these simple steps to get your paper done
Place your order
Fill in the order form and provide all details of your assignment.
Proceed with the payment
Choose the payment system that suits you most.
Receive the final file
Once your paper is ready, we will email it to you.
Our Services
Ace Writing Center has stood as the world’s leading custom essay writing services providers. Once you enter all the details in the order form under the place order button, the rest is up to us.
Essays
At Ace Writing Center, Nowadays, students normally have extremely busy schedules. You will note that some of them have to take on some evening or weekend jobs in order to get some income that can help them to sustain in college or in the university. This can deny them a chance to write all the essays given. Others usually get bombarded with a lot of work by their lecturers. This can still delay such students from working on all their essays. However, some of them usually try to work on all these essays but end up delivering their work late. This can prevent them from graduating since most lecturers are strict on deadlines. If you want to write a business essay, the wise way is to hire an outstanding essay writing service like us, so that you can get the best results. If you are keen, you will note that many companies usually overcharge their customers. Some of them are there only to make money. And in reality, they really don’t care to build a long term commitment with students. You should not choose such companies. You should take your time and choose a reliable company to work with. Ace Writing Center is the ultimate solution for you. We have been offering our writing service for more than 7 years. This is a clear indication that you will get quality essay writing service. We have a wide range of writers who can work on any business essay that you might have. We believe in doing extensive research so that we can provide quality work to all our clients. .
Admissions
Admission and Business Papers
Have you ever had to write an admission essay for college? The majority of students face the same issues when applying to a university or college and many in such situations decide they need professional help to cope with this matter. They get in a situation when the deadline keeps coming closer but lack motivation to start because they are just not sure if their writing skills are strong enough. We have a solution for you! Ace Writing Center is the best admission essay writing service with a large professional team and years of experience in providing high-quality papers to students of all levels and faculties. The mission of our team is to help students make their dreams of entering a good college come true and that’s what we offer!.
Editing
Editing and Proofreading
Sometimes all the words for your paper just flow out of your mind and into your fingers. You type quickly at your keyboard and there they are, your beautiful words right there on the screen. But you have no idea how to polish it up. You may be wishing there was a paper writing service that offered this type of writing service. Look no more! Here at Ace Writing Center, we offer you an editing and proofreading option that you can't find anywhere else..
Coursework
College Essay Writing
In case you are familiar Ace Writing Center, you know the way to distinguish a better company from a cheap one exactly. First of all, poor service website does not have a sufficient support. We think support team is an essential part of success; it has to answer all clients’ questions and be a connecting link between clients and their writers. On our web-service you will get answers about anything you need and your writer will receive all your instructions, assignments and requirements exactly and swiftly. A writing service that we run has got a flexible pricing system that will save you from senseless wastes and many bonus systems that let you sparing money for something important for you.
