Two researchers, Mamelodi and Phatane report the results of an investigation into the factors affecting the quantity Yt of wheat produced in Thohoyandou, Limpopo province of South Africa, using annual data from 1995 to 2015. The following regression was run and the estimated equation was found to be: Yt = 993.633 + 0.0461It + 0.706 Dt + 48.22Rt (1368.4) (0.273) (0.945) (11.28) Standard error of estimates are in parenthesis Adjusted R2 = 0.56 Where It, Dt, and Rt were hectares of irrigated area, hectares of dry land area and rainfall respectively. a) Estimate t-value for each of the predictor variables in the model b) Briefly explain why Mamelodi and Phatane may have concluded that the result did not make sense.
Two researchers, Mamelodi and Phatane report the results of an investigation into the factors affecting the quantity Yt of wheat produced in Thohoyandou, Limpopo province of South Africa, using annual data from 1995 to 2015. The following regression was run and the estimated equation was found to be: Yt = 993.633 + 0.0461It + 0.706 Dt + 48.22Rt (1368.4) (0.273) (0.945) (11.28) Standard error of estimates are in parenthesis Adjusted R2 = 0.56 Where It, Dt, and Rt were hectares of irrigated area, hectares of dry land area and rainfall respectively. a) Estimate t-value for each of the predictor variables in the model b) Briefly explain why Mamelodi and Phatane may have concluded that the result did not make sense.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Two researchers, Mamelodi and Phatane report the results of an investigation into the
factors affecting the quantity Yt of wheat produced in Thohoyandou, Limpopo province
of South Africa, using annual data from 1995 to 2015. The following regression was
run and the estimated equation was found to be:
Yt = 993.633 + 0.0461It + 0.706 Dt + 48.22Rt
(1368.4) (0.273) (0.945) (11.28)
Standard error of estimates are in parenthesis
Adjusted R2 = 0.56
Where It, Dt, and Rt were hectares of irrigated area, hectares of dry land area and
rainfall respectively.
a) Estimate t-value for each of the predictor variables in the model
b) Briefly explain why Mamelodi and Phatane may have concluded that the result
did not make sense.
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