### Ae there other variables that you think should have been

Assignment Help Other Subject
##### Reference no: EM13472813

In this assignment, you will use a spreadsheet to examine pairs of variables, using the method of linear regression, to determine if there is any correlation between the variables. Afterwards, you will postulate whether this correlation reveals a causal relationship (and why).

This spreadsheet (in attachment) contains the data from a study that attempted to see if there is a correlation between the hours that students studied and the grade that they earned on a test. The correlation test you are about to run will help you to determine if there is, in fact, a correlation between study time and test score. If you find a strong correlation, then you will postulate whether you feel this indicates a causal relationship.

Below are instructions on how to perform this correlation test in Microsoft Excel.

In the Excel spreadsheet, perform the following operations:

• With your mouse, highlight all of the data on the spreadsheet in columns A and B.
• In the tabs at the top of the page, click Insert.
• In the Insert ribbon, in the Charts section, click Scatter. Be sure to select the option where it will just plot dots, it will be called Scatter with only Markers. If you do this right, then you'll see a chart on the page.
• Now, on the chart, right-click on one of the data points (dots). Just pick a dot somewhere near the middle of the distribution.
• Select Add Trendline from the drop-down menu that appears when you right-click on a dot.
• A new menu will appear. Select Linear, select Automatic, and click the boxes next to Display Equation on chart and Display r-squared value on chart.

Click Close.
Now, you should see a line drawn through the dots. It will roughly cut through the middle of the dot distribution.
You'll also see the linear regression equation and r2 value displayed next to the line.

Now that you've completed your analysis and determined the linear regression formula and r2, it is now time to report on the results of your study and examine your findings.

In a Microsoft Word document, respond to the following:

1. Report the sample you selected and the question that was explored in the study.
2. Report the r2 linear correlation coefficient and the linear regression equation produced in the Excel spreadsheet.
3. What would be the value of Pearson's r (simply the square root of r2)?
4. Would Pearson's r be positive or negative? What does this imply about the relationship between the factors in this study?
5. What is the implication of any correlation found between the variables in the study you picked?
6. Does this correlation imply a causal relationship? Explain.
7. Are there other variables that you think should have been examined that would have improved this study or helped to pinpoint what factors are causal?
8. For this assignment, you will submit a spreadsheet and a report. The spreadsheet will be the Microsoft Excel file containing your scatterplot and analysis

#### Questions Cloud

 The area t of a triangle with a height of 11 units and a : the area t of a triangle with a height of 11 units and a base of length b units is given by the following formula Determine whether the triangles are similar if so write a : determine whether the triangles are similar. if so write a similarity statement. explain your reasoning.triangle one In a small town a group of 100 adults were asked if they : in a small town a group of 100 adults were asked if they drink coffee in the morning. 57 of them said that indeed they Write down a 700- to 1050-word paper explaining : write a 700- to 1050-word paper describing demonstrative communication which includes nonverbal and unwritten Ae there other variables that you think should have been : in this assignment you will use a spreadsheet to examine pairs of variables using the method of linear regression to The thickness of a board is 0037 metersthis is 0014 meters : the thickness of a board is 0.037 meters.this is 0.014 meters less than what it is supposed to be.how thick is it Given any three noncollinear points in the plane the area : given any three noncollinear points in the plane the area of the triangle determined by three points is given by the Locate an article regarding a controversial subject where : locate an article about a controversial subject where the author makes an argument you do not agree with.write a 350- Below is data on weekly quantity demanded of pizza in a : below is data on weekly quantity demanded of pizza in a small town in south georgia prices and average household

### Write a Review

#### Cross-cultural opportunities and conflicts in canada

Short Paper on Cross-cultural Opportunities and Conflicts in Canada.

#### Sociology theory questions

Sociology are very fundamental in nature. Role strain and role constraint speak about the duties and responsibilities of the roles of people in society or in a group. A short theory about Darwin and Moths is also answered.

#### A book review on unfaithful angels

This review will help the reader understand the social work profession through different concepts giving the glimpse of why the social work profession might have drifted away from its original purpose of serving the poor.

#### Disorder paper: schizophrenia

Schizophrenia does not really have just one single cause. It is a possibility that this disorder could be inherited but not all doctors are sure.

#### Individual assignment: two models handout and rubric

Individual Assignment : Two Models Handout and Rubric,    This paper will allow you to understand and evaluate two vastly different organizational models and to effectively communicate their differences.

#### Developing strategic intent for toyota

The following report includes the description about the organization, its strategies, industry analysis in which it operates and its position in the industry.

#### Gasoline powered passenger vehicles

In this study, we examine how gasoline price volatility and income of the consumers impacts consumer's demand for gasoline.

#### An aspect of poverty in canada

Economics thesis undergrad 4th year paper to write. it should be about 22 pages in length, literature review, economic analysis and then data or cost benefit analysis.

#### Ngn customer satisfaction qos indicator for 3g services

The paper aims to highlight the global trends in countries and regions where 3G has already been introduced and propose an implementation plan to the telecom operators of developing countries.

#### Prepare a power point presentation

Prepare the power point presentation for the case: Santa Fe Independent School District

#### Information literacy is important in this environment

Information literacy is critically important in this contemporary environment

#### Associative property of multiplication

Write a definition for associative property of multiplication.