Question

In: Statistics and Probability

Cheddar cheese, total Supply and disposition2 September 2019 October 2019 November 2019 December 2019 January 2020...

Cheddar cheese, total

Supply and disposition2

September 2019

October 2019

November 2019

December 2019

January 2020

Tonnes

Supply, total

52,295

56,466

57,389

56,675

57,238

Beginning stocks

39,478

41,949

44,234

42,674

42,274

Production

12,407

13,808

12,474

13,388

14,738

Imports

410

709

680

613

226

Ending stocks

41,949

44,234

42,674

42,274

42,660

Disappearance, total

10,346

12,232

14,714

14,401

14,578

Exports

121

256

367

191

487

Domestic disappearance

10,226

11,976

14,347

14,209

14,091

Cheddar cheese, total

Supply and disposition2

September 2019

October 2019

November 2019

December 2019

January 2020

Tonnes

Supply, total

52,295

56,466

57,389

56,675

57,238

Beginning stocks

39,478

41,949

44,234

42,674

42,274

Production

12,407

13,808

12,474

13,388

14,738

Imports

410

709

680

613

226

Ending stocks

41,949

44,234

42,674

42,274

42,660

Disappearance, total

10,346

12,232

14,714

14,401

14,578

Exports

121

256

367

191

487

Domestic disappearance

10,226

11,976

14,347

14,209

14,091

What is the anova table and multiple regression?

Solutions

Expert Solution

The attached table is an 8x5 table :

ANOVA table tests the significance of supply methods on production of cheddar cheese across 5 months

Equation formation :

Yijk = µ + ri + cj + eijk

ri is the ith row effect (supply)

cj is the jth col effect (months )

ANOVA table is used to perform multiple t-tests to test the effect of 8 different supply methods to quantity of cheddar production

Looks like :

Source Degrees of freedom SS MSS Fratio
Rows 7 SSR SSR/7=MSR MSR/MSE
Columns 4 SSC SSC/4=MSC MSC/MSE
Error 28 SSE SSE/28=MSE
Total 39 SST

However Multiple regression (I am assuming is linear ), Is used to predict the cheddar cheese value in tonnes for next month (Feb 2020) .

Multiple regression table will look like :

Estimate Std error T-value Pr(>|t|)
Intercept
Supply total
Begining stocks
Production
Imports
Ending stocks
Disapprearence
Exports
Domestic Disappearence

Usage of F test and T test is the differenential and deciding point . while p value and hypothesis formation is also different in both these methods.


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