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Assignment: Regression Lines
Review the instructional video on how to use regression in Microsoft Excel.
Input your data into Microsoft Excel (data and years).
Create a scatter plot.
Insert a polynomial trendline with degree of 2. Make sure to show the equation and the R-square value. Also make sure you label each axis and give a title to your graph. Then repeat this process for a linear trendline in a new Microsoft Excel worksheet.
Answer the following questions in 175 to 260 words in the same Microsoft Excel worksheet as the graph:
• Which of the trendlines fits the data better? How can you tell?• Compare and contrast the shape of the linear regression trendline with the shape of the quadratic.• Which do you think will eventually grow faster? Thinking about the type of data you have, do you think your data will grow quickly over time? • Which (lines or quadratics) has a minimum or maximum value? Thinking about the type of data you have, do you think your data has a minimum or maximum?
Let X and Y be discrete random variables with joint pdf f(x, y) = 4/(5xy) if x = 1, 2 and y = 2, 3, and zero otherwise. Find: (a) E(X). (b) E(Y).
1. at the bottom left side of the applet set n equal to 10 and then check the animate box. now click on flip. record
Perform a multiple regression in Excel and provide excel output for the regression model = βo + βo(Lot size) + βo(Trees) + βo(Distance) + ∈ Write down the equation for regression line. What is the standard error of estimate? Interpret its value. What..
Determine the sample size needed so that we are 95 percent confident that pˆ, the sample proportion of voters who favor the candidate.
You take a random sample of size 100 from a normal population with unknown mean but known standard deviation 40. You plan to test H(null): mu=85 versus H(alternative): mu > 85. Your procedure will be to observe the sample then reject H(null) is xbar>..
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The program office budgets $30,000 per program review at the contractor's site. Your concern for "end of year" spending drills is that you have budgeted enough for the reviews (i.e. you are only concerned if the actual costs are higher than the $30,0..
A university librarian wanted to determine if social sciences undergraduates had a preferred method for searching the Internet for sources for academic papers. Over a 5-day period she randomly surveyed 100 students who came into the CSUDH library and..
How many cases of relays and capacitors should Harkin Electronics produce during that period? If your answer is in fractional units of cases that is acceptable - do not round to whole number of cases.
question 1you are a data analyst working for the australian petrol pricing commissioner and have been requested to
Select a column of data other than Commuting Time from the STATES data file and create a Histogram and Polygon using the Commuting data as an example. 150 points (50 extra) will be assigned for completing this task
Bay Area university enrolled mba students in three cohorts programs:weeknight, Saturday, and distance. Dean Ed Epstein wants to know if there is a difference in the average of the students in the three programs. State null hypothesis
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