# Project #37624 - statistics

1.       GSS2012* How does the amount of education of one's parents (PAEDUC, MAEDUC) affect your education (EDUC)?

A Develop a regression model

B.   Test the validity of the model

C. Test the two slope coefficients

D.  Interpret the coefficients

E.  Calculate the correlation between the father's and the mother's years of education. Is there any sign of multicollinearity

2.    GSS2008* Use the General Social Survey of 2008 to conduct a regression analysis of income (INCOME) using the following dependent variables:

Age (AGE)

Years of education (EDUC)

Hours of work per week (HRS)

Spouse's hours of work (SPHRS)

Occupation prestige score (PRESTG80)

Number of children (CHILDS)

Number of family members earning money (EARNRS)

Years with current employer (CUREMPYR)

A.  Calculate the correlation matrix.

B.  Are there signs of the presence of multicollinearity? Explain.

C.  Test the correlation between each independent variable and the dependent variable. Which independent variables are linearly related to the dependent variable?

3.  Xr20-932 Plot the following time series to determine which of the trend models appears to fit better.

 Period 1 2 3 4 5 Time Series 55 57 53 49 47 Period 6 7 8 9 10 Time Series 39 41 33 28 20

4.   The following trend line and seasonal indexes were computed from 4 weeks of daily observations. Forecast the 7 values for next week.   yÌ‚ = 120 + 2.3t    t = 1, 2, … , 28

 Day Seasonal Index Sunday 1.5 Monday .4 Tuesday .5 Wednesday .6 Thursday .7 Friday 1.4 Saturday 1.9

5.  Draw the decision tree:

 a 1 a 2 s 1 55 26 s 2 43 38 s 3 29 43 s 4 15 51

6.   The owner of a clothing store must decide how many men's shirts to order for the new season. For a particular type of shirt, she must order in quantities of 100 shirts. If she orders 100 shirts, her cost is \$10 per shirt; if she orders 200 shirts, her cost is \$9 per shirt; and if she orders 300 or more shirts, her cost is \$8.50 per shirt. Her selling price for the shirt is \$12, but any shirts that remain unsold at the end of the season are sold at her famous "halfprice, end-of-season sale.” For the sake of simplicity, she is willing to assume that the demand for this type of shirt will be 100, 150, 200, or 250 shirts. Of course, she cannot sell more shirts than she stocks. She is also willing to assume that she will suffer no loss of goodwill among her customers if she understocks and the customers cannot buy all the shirts they want. Furthermore, she must place her order today for the entire season; she cannot wait to see how the demand is running for this type of shirt.

A.   Construct the payoff table to help the owner decide how many shirts to order.

B  Set up the opportunity loss table.

C.  Draw the decision tree

Submit your answers in a Microsoft Excel workbook, with each problem on a separate worksheet. Label each tab in the workbook with the exercise number. Highlight the answers in yellow and provide an interpretation in a text box.

 Subject Mathematics Due By (Pacific Time) 08/10/2014 12:00 pm
TutorRating
pallavi

Chat Now!

out of 1971 reviews
amosmm

Chat Now!

out of 766 reviews
PhyzKyd

Chat Now!

out of 1164 reviews
rajdeep77

Chat Now!

out of 721 reviews
sctys

Chat Now!

out of 1600 reviews

Chat Now!

out of 770 reviews
topnotcher

Chat Now!

out of 766 reviews
XXXIAO

Chat Now!

out of 680 reviews