Question

In: Statistics and Probability

According to the USDA Economic Research Center (Links to an external site.), "Any student in a...

According to the USDA Economic Research Center (Links to an external site.), "Any student in a participating school can get an NSLP lunch regardless of the student's household income." Using the Kids Count data provided, calculate regression analyses with scatter diagrams and trendlines in Excel, and compare the differences and similarities between children with at least one parent unemployed and children from low-income working families. One regression analysis will compare total public school students receiving free or reduced price lunches in Indiana with at least one parent unemployed and the other regression analysis will compare total public school students receiving free or reduced price lunches in Indiana with children from low-income working families. Both worksheets should show a Summary Output to include multiple R, R square, adjusted R square, standard error, and number of observations. In addition, include ANOVA calculations and the residual output.

Do you see a trend and if so, what is it? What does the data suggest about working or not working and the influence on student free/reduced lunches? How does Community Eligibility Provision (CEP) potentially impact future data sets?

Solutions

Expert Solution

sollution; from the given the data...... Scatterplot: Select data-> Insert-> Charts(Scatterplot) -> Add trendline -> Model(Linear) -> Select R2 and trendline display

Method : Enter data as shown -> go to Data tab -> go to Analysis -> select Data Analysis -> Select Regression -> Enter Y and X range -> OK

You will get the following output.

Regression 1:

Regression 1 one unemployed parent Y
2008 98000 408625
2009 198000 435039
2010 196000 472076
2011 172000 489137
2012 163000 501230
2013 127000 508582
2014 95000 512114
2015 69000 511677
2016 62000 502452
2017 58000 493243

Scatter plot :

Table for Regression 1:

Regression Statistics
Multiple R 0.322966515
R Square 0.10430737
Adjusted R Square -0.007654209
Standard Error 35296.18799
Observations 10

Anova for 1:

ANOVA
df SS MS F Significance F
Regression 1 1.16E+09 1.16E+09 0.931635 0.362705349
Residual 8 9.97E+09 1.25E+09
Total 9 1.11E+10

Estimates:

Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%
Intercept 508974.0935 28734.12 17.71323 1.06E-07 442713.0891 575235.1 442713.1 575235.1
X Variable 1 -0.20643452 0.213875 -0.96521 0.362705 -0.699630368 0.286761 -0.69963 0.286761

Regression 2:

Scatter plot:

Table for R2 :

SUMMARY OUTPUT
Regression Statistics
Multiple R 0.780121
R Square 0.608588
Adjusted R Square 0.559662
Standard Error 23389.23
Observations 10
ANOVA
df SS MS F Significance F
Regression 1 6.8E+09 6.8E+09 12.43883 0.007767
Residual 8 4.38E+09 5.47E+08
Total 9 1.12E+10
Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0%
Intercept 10022.48 134418.6 0.074562 0.942394 -299947 319992.3 -299947 319992.3
X Variable 1 0.559129 0.158534 3.526873 0.007767 0.193549 0.92471 0.193549 0.92471

As it can be seen ,

R Square 0.608588237 (Regression2) > R Square 0.104307 (Regression 1)

Regression2 is significant using (F cal > F critical). Therefore, lower income families has an effect on  total public school students receiving free or reduced price lunches in Indiana rather than having one unemployed parent.

Please rate my answer and comment for doubt. thank you


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