Category: Mathematics Homework Help

There are five parts to this discussion: Read, identify three different variable pairs, create table, create graph, describe in words.

Prepare: Prior to beginning work on this discussion, read Chapter 9: Modeling Our World and Chapter 10: Modeling with Geometry in your course text, especially pages 532-3 & 536-9.

For this discussion, identify three different variable pairs in which two quantities appear to be related from either recent news stories, the web, or that you encounter in your everyday life. Each variable pair should come from a different source (as illustrated in the week 4 Discussion Sample) and there should be three sets of paired variables total.

Important note: Only one of the variables can use “time” as an independent variable. For example, you cannot have your variable pairs be (time, dependent variable 1), (time, dependent variable 2) and (time, dependent variable 3). However, you can have your variable pairs be (time, dependent variable 1), (independent variable 2, dependent variable 2) and (independent variable 3, dependent variable 3).

For inspiration, use the examples listed in the solution to Example 1 on p. 537 of the text, or the Week 4 Discussion Sample download, MAT205.W4.DiscussionSample.pdf. Be sure to select different examples!

Create Table

After you have identified three different variable pairs (from distinct sources), make a table of between 10 and 20 entries of data values for each of your variable pairs.

Create Graph

Then, graph your data values for each variable pair and describe in words the function that relates the variables. For each pair, write down at least five (5) points on the graph. Draw the graph using paper & pencil or use an online graphing calculator like Desmos Graphing Calculator (Links to an external site.).

Describe Your Results in Words

For each of the pairs you listed, identify the dependent and independent variables and briefly describe the relationship.

See the week 4 Discussion Sample to see how these go (You must use different examples; you should complete three examples total).

• Your initial post should be at least 250 words in length. It should show all the required math work and explain all the steps. Also include a simple reference for any scholarly resource you used. For example: Washington Post dated August 13, 2018 or retrieved from <url-address> or I consulted example 1 on p. 537 of the text.
• Your initial discussion thread is due on Day 4 (Friday), and you have until Day 7 (Monday) to respond to your classmates. Your grade will reflect both the quality of your initial post and the depth of your responses. Carefully review the Grading Rubric for guidance on how your discussion will be evaluated.

The Easy Way to Plot and Graph Points

Use the Desmos Graphing Calculator (Links to an external site.): (You need not create an account.)

Click on the “+” at the top left corner.

Select “table” from the drop-down menu.

Type in your points. If your point is (2, 30), then x1 is 2 and y1 is 30.

** If your points contain any values beyond  ±10, click the minus sign in the upper right-hand corner a few times to zoom out so you can see the points. **

To add a line connecting the points: 

Click and hold on the circle with four dots on it (next to y1). Click the circle next to “Lines” to show the connecting line. Your graph is done.   

To share the graph, take a screenshot. [This site will show you how: http://www.take-a-screenshot.org/ (Links to an external site.). Click on the tab for Mac or Windows at the top, if needed.] Alternatively, click on the arrow in a box at the upper right hand corner of the screen, then you can “Export Image” as a .png file (it appears in your “Downloads” folder) and attach this to your discussion post or drop and drag into a Word file.

Guided Response: Respond to at least three different peers by Day 7. Give specific thoughtful and substantive responses addressing their points and back up your ideas with references. If you notice classmates forgetting to complete part(s) of the discussion, tactfully encourage them to complete the remaining part(s). Be specific. Give a hint, if possible.

• Have they answered all the questions pertaining to their problem?
• Have they used all the required resources and cited the references correctly?
• Do you understand their answers and agree with their conclusions and viewpoints?
• What are your arguments against their answers?

1. The data given below are the temperature readings reported in degree Celsius.15, 23, -18, 19, 26, -5, 12, 27, 19

(a) Which of the following data type categorizations would best describe thetemperature records?A. Categorical/NominalB. OrdinalC. BinaryD. ContinuousE. Discrete

(b) Calculate the range of the temperature records.

(c) Calculate the mode of the temperature records.

Question:

We have discussed the alignment of an organization’s IT architecture with its operations and strategy.  This week, we have a related case from Vermont Teddy Bear.

Please read the attached case study.

Then, in a single post to the Vermont Teddy Bear forum answer the following questions:

1.  How well does Vermont Teddy Bear’s information architecture align with its operations and strategic direction?

2.  What recommendations would you make to increase the effectiveness of the IT organization and architecture in meeting Vermont Teddy Bear’s objectives?

Respond to one of the following options in your initial post, citing at least one specific credible source in support. Question on credible sources? See the Scholarly, Peer-Reviewed, and Other Credible Sources (Links to an external site.).

Option 1

• Determine whether there is any link between the normal distribution and Variation 2: Standard Deviation (With a Digression on Eggroulette) (Links to an external site.) where we relied on statements such as “about two-thirds of observations are within one standard deviation of the mean.”
• Briefly discuss.

Option 2

• State an example of a variable that follows a normal distribution.
• State one way knowing this is useful in your professional or personal life.
• Briefly elaborate on your example.

Option 3

• Identify the minimum number of data points needed to generate a normal distribution.
• Create a data set of that size, and show that it meets the first three conditions for a Normal Distribution in section 5.1 on page 164 of the text.

“The Null hypothesis is that there is no difference in mean satisfaction between managers and individual contributor satisfaction. While The Alternative hypothesis is that managers are more satisfied than the individual contributor employee.” If you wanted to use Statistical notations, how would you write the hypothesis statements?

Review the data your coworker collected in the Analysis of t-Test Data Spreadsheet.

First, plan your analysis. Second, conduct your analysis.

Explain the followings:

Part 1: Planning

• What are the null and alternative hypotheses?
• Where did you obtain your data or who obtained it for you?

Part 2: Analysis

• What are the descriptive statistics for your sample? Include:
• Sample size
• Mean
• Median
• Mode
• Standard deviation

Post a response to your classmate. Be constructive and professional.

This is an answer from another student. I need a reply to their answer with a minimum of 100 words and without any references.

“The null hypothesis would be that there is no difference in contribution between managers or individual employees. The alternative hypothesis would be that there is a difference in contribution between managers and individual employees. The data for this analysis was obtained by a coworker, not sure the method that was used.

The sample size is 53 individuals which consists of 25 managers and 28 individual contributors.

The mean for managers is 59.24.

The mean for individual contributors is 42.39

The overall mean is 50.33

The median for managers is 67.

The mode for managers is 78, 54, 56, 67, 23.

The median for individual contributors is 35.

The mode for individual contributors is 23.

The overall median is 45.

The overall mode is 23.

The standard deviation for this data group is 28.7

According to the results, the null hypothesis is wrong since there is a difference in contribution between managers and individual employees.”

two attchments one is the question and another one is the data. It’s my last assignment and worth the most points so i need a sample draft to help me get the perfect score.

You have been charged with creating a survey for your community! The community is interested in having you create a survey and present the results at the next town hall meeting.

In this project, students will:

Learn about quantitative variables.

1. Learn to analyze data for measures of central tendency (mean, median and mode)
2. Learn to create an effective presentation with real-world conclusions.

To complete this project you will:

Think of a problem within your community or workplace. The problem needs to be something others will have an interest in solving or will want to share reactions to.

1. Create a 10 question survey with quantitative variables (number) on a topic you are interested in. Think of questions where 0 is dislike there is a scale to 4- like. Another way to do this is using 0-never, 1 sometimes, 2 frequently, and 3 always.
2. Administer the survey to a minimum of 10 people.
3. Analyze your data for the mean, median, and mode of each questions.
4. Create a visual from this chapter: bar graph, box and whisker plot, histogram, stem and leaf plot. etc.
5. Compile the information into a slide presentation, of at least 5 slides, to present at the next town hall. The presentation should present: the mean, median, and mode of each question, the visual of the data, and conclusions based on the statistics you found in the survey.
6. 2 pages
7. 12 point, Calibri Font, no more than 1″ marginsSubmit in word

I need an explanation for this Statistics question to help me study.

Questions:

Please answer each of the following questions and provide examples for better clarity wherever applicable. Provide in-text citations. In answering the following questions please include choice of significance level and the effect of p-values

Explain the linear multiple regression model, the independent variables and the dependent variable, assumptions of the model, as well as the objectives

Given the data, what approach is taken to construct the model?

Explain the effect of multicollinearity in multiple regression, and how multicollinearity is detected?

• Show that the estimates of the coefficients are unbiased estimates of actual values.
• Explain the hypotheses on coefficients of the regression and how the results of testing these hypotheses are interpreted about significance of these coefficients? Include both unidirectional and bidirectional situations
• How do you interpret the effect of significant coefficients?
• How are the distribution of the observed residuals of the constructed model tested for normality? 
• What is the coefficient of determination, and what is its significance?
• Why is the adjusted coefficient of determination used as an alternative assessment
• How can the regression model be used for prediction?